First off, welcome! I am having the same problem!!
My perents bought me a horse that was sold as kid broke, beginner ready. We have had her for one month and she has bucked me off and crow hops if you try and ride her. The thing is, she is the sweetest thing ever if you are not riding her! She is great around small kids and has great ground manners. We finally just decided that we wanted to sell her (we want to ride, not just keep her a s a pasture ornament), so we put her on Craigslist and she is being picked up tomorrow by a nice couple who wants to use her as a broodmare. Trust me, I understand how your daughter feels. I was so excited to get my first horse, only to have to sell her a month later. Could we have sent her off to get trained? Yes. But we had bought a horse that we didn't want to put more money into.
We are now looknig for a different horse that really is kid broke. I hope you figure something out. Maybe you should pay a trainer, but we didn't want to have to wait, nor did we want to pay more for a horse we bought as ready-to-go.