My prediction for a Harper scene is after the first game, seems as good as time as any.
She's been coach there for a few years now and they've been winless since Ryker showed up which is 2-3 years I don't think they said whether or not he's a senior or junior.
So a first win, makes narrative sense, but I don't think we'd get Harper before her daughter, so maybe Harper after first real win, which is, I have no idea when the regular season is suppose to start. I think it was mentioned but I can't recall.