Have your daughter keep a journal/log of everything questionable with the coach. If you feel there is enough information to make a complaint to the AD, then do so.
I would encourage your daughter to avoid situations where there are opportunities to be around the coach and have him behave inappropriately. She should enlist the help of friends on the team for this. She should ask other friends on the team if they have observed the same behavior, but she (or you) are in no position to complain about what others have observed, it just may confirm your experience.
Try to attend a practice or meet and observe the coach with all the other kids on the team. Try to spend some time talking to the coach about their background, experience and get to know them and them you. If you aren't comfortable with the type of person they are, that's another reason to make a change.
It may be a stretch to ask to be exempt from a transfer rule to sit out a year just because you don't like a coach (for whatever reason), but you may be better off having your daughter quit the team and train with a running club or a private coach or try another after school activity than continue with a coach that she is uncomfortable with.