I would also agree with Kai. If you daughter doesn't like this therapist, then she isn't a good fit for your DD10. If you think you DD needs to see someone at this time then you probably need to find someone new for her. No reason to change for the other daughter. Choosing therapists can be complicated & personal, and just because you like her doesn't mean she is a good fit.

Don't have a lot of good idea's about the ADHD but I agree that there is no reason to PUSH the label. Are you trying to get her to take meds or do other strategies and she is resisting?

Good Luck.