nah man she doesn't, once you told her not to she just leave the guy and go back to the fret. Story progress and you then have 2 option, 1 is let's her follow the call or 2 is eat and let her be one with you
oh then there is other route? Mine has 2 time to kill her or not.
1 is when you progress story with Tiffany and put the tracking device to the "mother" Bailey talking about, then visit Bailey in that time you'll give her a bottle have a part of the "mother", she consume it which she's mistaken for food, then the "mother" which part of her in the bottle talk to Bailey and let's she control her body and attack you, after you fix her you then have 2 option is to kill or spare. The dialogue this time is kinda sad for Bailey if you choose to kill her.
2 is like I said in the comment before.