As Nalla watched in horror and wonderment, Betsy's body shuddered back and forth from the force of her fucking.  Her small but firm B-cup breasts bounced back and forth as he body rocked, suspended in mid-air.  Most of her clothing had been torn from her body, what she had left was some remnants of her lab coat, with one sleeve missing, and some tattered bits of fabric around the waistband area of the skirt she used to be wearing.  Her thick rimmed glasses were still on her face, though they were smudged with her sweat.<br/><br/>As Nalla moved to grab some offensive items, the creature thrusting in and out of Betsy's cunt withdrew, leaving that hole gaping and turned it's attention toward Nalla!  The other creature wasn't bothered, and continued to ravage Betsy's tiny anal hole.  Betsy, while attractive, was almost always too involved in her work to obtain a boyfriend, and her inexperience was apparent in her tightness.  Each time the creature withdrew it's appendage to strike the girl's asshole, it looked like her petite sphincter was going to pull right off of her body!<br/><br/>When the scientist obtained her materials, she heard a voice speaking to her inside of her head.  It was more powerful then her normal internal dialect, and she could tell it was coming from an outside source, "Do not fight against us.  Submit or we will be more brutal when you are captured."  The alien thing that had stopped ravishing Betsy was slowly making it's way toward Nalla now.