FWIW, before your decide that avoiding court is worth preventing your DD from going to a gifted program, it might be a good idea to talk to her school counselor, and a school counselor who works with the gifted program.
High school is hard enough for everyone. Being gifted makes one a bit of a freak. It may be a whole lot better for her to be in a gifted program than in a regular program that bores her to tears. For that is a sure recipe for poor grades and poor, risky behavior. I think letting this slide may be far more harmful than you think. I hurt for your daughter that she will be getting less than she has earned and less than is freely available to her and less than she wants in terms of an education that could really let her flourish over the next few years.
When she is 18 she can go where she wants. It is now that she needs your support. When she is 30 she will wonder why she didn't have the opportunity to go to one of her favored college programs because her high school education was lacking, and lacking for no good reason.
