I would stop the mandatory rotation for now. At U9, if a player is really unhappy, forcing them into goal just turns them off the game entirely. You want them excited to be at training, not dreading their turn between the sticks. Let her play out for a while, and just ask if anyone wants to volunteer for a half or a full game instead. You’ll usually find another kid who actually likes the challenge or just wants to wear the gloves. I’d keep the game sessions focused on 4v4 or 5v5 without a fixed goalie, or use 'flying keepers' where whoever is deepest just drops back. If you make it less of a chore, she might even choose to go in there herself one day when the pressure is off.
