The homeless law

This does not work., Your daughter is "talking smack." Until she is 18, she does not have the legal authority to decide where she wants to live. Only you can make that decision unless social services or some other federal or state agency has deemed you unfit and goes to court to take that responsibility away from you in which case she still wouldn't be able to make her own decisions; the court would make those decisions for her.

Your daughter can't even sign a contract with an attorney to represent her in court since she is not of legal age to sign contracts. What you have here is a manipulative daughter trying to treaten you with a bluff into doing what she wants to do. She probably got this crappy idea from her ignorant friends.

Best way to stop this is to call her grandmother and get her to call the daughter and tell the daughter she can not stay with her. That should kill that idea. If the grandmother won't agree to do that, let your daughter go to the courthouse and make a fool out of herself. She might learn something.

Or . . . if you're tires of these games and the grandmother will take her in, let the daughter go. Just remember, you're still responsible for her until she's 18.