If she gets an offer, can they take it back if they decide they don't want her for some reason? If that's a possibility, I wouldn't tell them about D yet. But if, as I suspect, once the offer is made it's hers if she wants it, then it might make sense to talk to the coach and tell them about her D and then take the reaction into consideration when deciding which college to go to. She won't want to deal with a coach who is going to be difficult. So if she's getting many offers, this may be a way to eliminate some schools. But if there is a school she really wants to go to, for reasons other than the sports, and she gets an offer from them, I'd just tell her to accept it and then talk to the coach once she starts working with them. This will also give her time to learn more about D and how it will affect her so she can educate them about it better.