Please continue to support our quest to locate our beautiful 15 year old daughter, Brianna Herrmann!Your donations can make all the difference! We are using the funds to:1. Work with the right people.2. Gather neccessary supplies.3. Finance the search efforts.4. Offer a larger reward.5. Use the best resources to bring Brianna home ASAP!Brianna Herrmann, (15 y/o), was last seen in San Diego, CA on April 27th, 2015. Brianna is 5'4" tall, 118lbs, has blonde hair and brown eyes. She may be accompanied by Dean Henderson, aka Timothy Dean Rivera (20 y/o). Dean is 5'7" tall, 130lbs, has blonde hair and brown eyes. We really need the public to help locate her and bring her home safely! He preys on younger vulnerable girls, and is preventing Brianna from returning home or contacting her friends and family who love her dearly!If you have any information, please contact The Brianna Herrmann Hotline, (844)-7HELPUS (844-743-5787), which will be monitored 24/7 or call 911.Thank you for any donations to support our search! We feel your support, we see your contributions, and our spirits are lifted.**Please Note: once we bring Brianna home, we plan to donate any leftover donations to help other families find their missing children. This is a horrible experience no parent should ever suffer!** 

 Monday was Rhona Kauffman's birthday, and all she wanted was for her daughter Brianna Herrmann to be brought home safely. 
 
 "She's being held somewhere and we know she's fighting to get home. It's the worst thing to ever happen to someone, I'm just falling apart," Kauffman told Dateline. "My daughter and I are super close, super close. I have to keep fighting, that's what a mother has to do." 
 
 According to San Diego Police, Kauffman's 15-year-old daughter Brianna vanished after sneaking away from home in California on April 29th in her mother's car. That vehicle was impounded by Los Angeles police a little over a week later, after being found abandoned. Officials identified the last person seen with the 15-year-old as Timothy 'Dean' Rivera, 19, who police say is possibly selling drugs. Kauffman says her daughter met the teen on the beach in early April. 
 
 The teen left everything behind, including her wallet and retainer, according to Kauffman. She believes her daughter was lured out of her home and was not planning on being gone long. 
 
 Herrmann was reportedly last seen with Timothy 'Dean' Rivera, 19, who is described by the San Diego Police Department as 5'7" tall, weighing 130 lbs. with long blond hair. San Diego Police Department 
 
 There have been several reported sightings of Brianna over the past several weeks; one in Irvine, California, and another in Los Angeles. Kauffman says that her daughter had Snapchatted and texted to a friend saying she was being held captive behind a locked door in a home in Los Angeles several days after she vanished. According to KGTV, police raided the home in May where Brianna was believed to be and found the room she had described to her friend, but she was no longer there. Los Angeles Police did not return Dateline's call for comment. 
 
 "You don't know if your child is being harmed, you don't know where she is. She tried to get back to us so we're trying everything to get her back," said Kauffman. 
 
 Officer Humberto Hernandez of the San Diego Police Department told Dateline that they are the lead department on the case, but they could not release anymore information at this time. 
 
 Family and friends have continued to update the 'HelpFindBriannaHerrmann' Facebook page in order to keep spreading awareness about the teen's disappearance. Kauffman, a lawyer by profession, says she has taken nearly seven weeks off work in order to spend her days searching for Brianna. 
 
 "I can never give up, I never will. I have to get her back. A mother never gives up." 
 
 Brianna Herrmann is described as 5'4" tall, weighing 115 pounds, with blonde hair and brown eyes. 
 
 If you have any information that can help bring Brianna home, please contact the San Diego Police Department at (619) 531-2000. The family is reportedly offering a $10,000 reward for information that helps bring Brianna home safely. 

 SAN DIEGO - A local family says their teenage daughter is being held against her will and San Diego police are not pursuing the case. 
 
 
 
 "I can't function. I can't work, I can't eat, I'm not sleeping. I can't imagine … my daughter and I are so close," said Rhona Kauffman. 
 
 
 
 Kauffman said her 15-year-old daughter Brianna Hermann sneaked out of their La Jolla apartment on April 28. Kauffman told 10News she believes Brianna went to Los Angeles with a 20-year-old man she recently met. 
 
 
 
 While Kauffman acknowledged her daughter did run away, she said she believes Brianna, a freshman at University City High School, is being held against her will. 
 
 
 
 According to Kauffman, Brianna told one of her friends that she was in Los Angeles being held captive behind a locked door with a mattress on the floor. 
 
 
 
 On Tuesday, Los Angeles police raided the home where Brianna was believed to be located but she and the man were not found. 
 
 
 
 Police found everything that Brianna had described to her friend, including the room and the mattress on the floor. 
 
 
 
 Kauffman, a lawyer, tried to describe what the last two weeks have been like: "It's very devastating. It's the most devastating thing you could possibly imagine of anything in your life … it's just not real; it's horrible." 
 
 
 
 Kauffman told 10News that San Diego police will not get involved because they say it is simply a case of a runaway. 
 
 
 
 However, Kauffman believes her daughter's life is in danger, and the family is continuing to spread the word around Los Angeles and San Diego, as well as on social media.
– Brianna Herrmann, 15, has been missing since April 29. That was when she reportedly sneaked out of her San Diego home and vanished—though not entirely without a trace. The car she made off in, her mother's, was found abandoned in early May; potential sightings of her in LA and Irvine have been called in. And there's the ominous Snapchat messages. The teen's mother, Rhona Kauffman, tells NBC News via Dateline that Brianna Snapchatted with a friend soon after she went missing, saying she was being held against her will in an LA home. KGTV last month reported that the LAPD swarmed what they believed to be that home on May 12. They found a room matching the description Brianna had given her friend—it held a mattress on the floor—but she was not there. Neither was the man she's believed to be with: Timothy "Dean" Rivera, 19 or 20, who Brianna met on the beach the month she disappeared. NBC News describes him, by way of police, as a possible drug dealer; the family is more blunt. A GoFundMe page set up to raise funds to assist in the search alleges that Rivera "preys on younger vulnerable girls." Kauffman doesn't think her daughter intended to leave for good, noting she left her wallet and retainer at home, and the Help Find Brianna Herrmann Facebook page says that "Information was received that she has been seen possibly being forced to prostitute herself in the El Sereno area of Los Angeles." A $10,000 reward is being offered to anyone who can locate Brianna. In the meantime, "I have to keep fighting," says Kauffman, a lawyer who has put work on hold for nearly two months to search for her girl. "That's what a mother has to do."