I haven't tried the hairnet. I'll give it a shot for a practice and see if it holds. I think the main issue is the pony and everything gradually slips. The bun is snug even when it is falling out. Like the pony is unraveling.
Does your daughter really want to go to this party? If not, then it seems fine to skip it. If she really wants to go, you can warn her of possible consequences for accidents and let her to decide. You never want anyone to get hurt, but life is short and these girls already give up SO much for...
My daughter's coach requires everyone to wear their hair in a bun. Her hair is heavy and slippery. It comes down to mid back, so is long, but not ridiculously so. I've tried EVERYTHING I can think of to get that thing to stay on top of her head, but it has fallen out in 2 competitions!! I've...