There was only few options. Either get her out of the precinct or make some kind of alibi. You get in your car and drive. You pull up to the precinct after driving through five O'clock traffic in Manehattan. The fear was too much but, you had an alibi that would clear in case things didn't work out. If your mother mentioned anything about the year and two months, you would tell him you had no recollection of such things. You enter the glass door and go through the motions to meet with your mother. 