Scott, I totally agree with your last statement. Maybe gently ask her "I was wondering why you felt like it would shake up D's world too much for that one day when someone familar to her would be picking her up?. I am interested in hearing your reasons, because maybe I am not thinking of everything. You are her mother and know her as well as I do". Then if she agrees to try it at school first, I would offer to make the change if anything comes up.
