text: A former elementary school teacher who police say was obsessed with one of her 11-year-old students has waived a preliminary hearing on a felony charge that she interfered with the girl's legal custody. Geraldine Alcorn, 29, of Pittsburgh, and her attorney declined to comment as they walked from a city magistrate's courtroom Wednesday. In exchange for the waiver — which means Alcorn must now stand trial on the charge or take some kind of plea bargain — Allegheny County prosecutors dropped two other misdemeanors she faced: luring a child into a vehicle and corruption of minors. Leaving court: Geraldine Alcorn, left, leaves court on Wednesday April 1, 2015, in Pittsburgh after waiving a preliminary hearing on  Wednesday on a felony charge that she interfered with the girl's custody . Geraldine Alcorn, pictured walking to court on Wednesday, allegedly encrypted her phone number on the girl's math homework, exchanged thousands of text messages with her and even spoke of adopting her . Obsessed teacher: Geraldine Alcorn, 28, faces multiple charges for 'obsessively' texting an 11-year-old student . Prosecutors, who also declined to comment, allege Alcorn encrypted her phone number on the girl's math homework, exchanged thousands of text messages with her and even talked of adopting and running away with the girl before Alcorn resigned last month. The girl's mother, a single parent, complained to school officials after finding out Alcorn had visited the girl at their home while the mother was working. The mother then found stickers and letters from Alcorn in the girl's school binder, plus two letters the girl wrote to Alcorn with three headings: 'Things Ms. Alcorn and I can do,' ''what we can do,' and 'when we can do it,' the criminal complaint said. The girl told police she and Alcorn kept their relationship secret and, among other things, Alcorn discussed adopting the girl or taking her from her home. Alcorn had told the girl that 'they would be on the run for a while,' if Alcorn followed through on that, police said. Alcorn is not believed to have sexual feelings for the girl but allegedly told police of a 'deep love' she has for her. Pittsburgh Public Schools officials learned Feb. 13 that 'a teacher had developed an improper attachment' with a student at Pittsburgh Beechwood, a pre-K-5 school. Alcorn resigned March 2. Police said she tried to contact the girl on March 13, a Friday, when Alcorn returned to gather her personal belongings. The following Monday, police said, the girl found 'gifts and several letters, some encrypted, in her locker and desk,' according to the criminal complaint. 'The letters, written by Alcorn, instructed the 11-year-old female to contact her.' Alcorn hid her phone number on a math worksheet by telling the girl to dial numbers that had been circled, police said. Planned to run away: Geraldine Alcorn, left, leaving court on Wednesday, told the little girl she planned to run away with her and adopt her . Talked of going on the run: Attorney, Michael Worgul, left, leads Geraldine Alcorn, center left, down the steps from court Wednesday after she was accused of 'interfering with the child's custody' Didn't stop contact: Alcorn continued to contact the student even after she was forced to resign and warned to stay away from the 11-year-old, police say .
target: Geraldine Alcorn, 29, of Pittsburgh waived a preliminary hearing on a felony charge that she interfered with the parental custody of her 11-year-old student .
  In exchange for the waiver prosecutors dropped two misdemeanors Alcorn faced: luring a child into a vehicle and corruption of minors .
  Police believe her interest in the child was not sexual, but it was obsessive and she allegedly told the girl she wanted to run away with her .
  The girl's mother, a single parent, complained to school officials after finding out Alcorn had visited the girl at their home while the mother was working .