Definitely frustrating. Had some friends over for dinner the other night with a very unruly 3 year old. I caught him running toward my speakers, arm stretched out, finger pointed, and gunning straight for my tweeters. I swooped him up so quickly and played it off like I was giving him an airplane ride. Kid was within inches of his goal. This little wildling was all over the freaking place, even trying to climb behind my TV stand to try and rip out wires. Any time I took my eyes off him for 2 seconds, he was getting into trouble. Parents didn't seem to care. Very annoying.
While kids will be kids and we love them, these events are also a good opportunity to teach them about taking care of things and especially respecting other people's property. Yes, things may be replaceable (even if they are expensive or rare), but that doesn't mean we can let kids run amok around our equipment. I don't care if they're two, three, or any age. Boundaries have to be instilled. When I was a wee one, my parents got a killer Pioneer stereo system with giant towers. I was simply not allowed to touch it. Plain and simple. It was off limits. The whole family got to enjoy many years of great sound out of it, and then they gave it to me when I grew up and got my own place. Used it for many more years. That's what can happen when you teach kids that not ALL things are toys (well not THEIR toys at least), and that they need to be gentle on things or that certain things are just off limits. Would any of you let a kid have their way with your A/V racks?
I know I'm going to get crap for thinking this way, but I just have the opinion that too many parents these days let kids pretty much do whatever they want because we love them so, and stuff is just stuff. NOPE. I don't care if they're my kids or other people's kids. When they're at my house around my equipment, they are simply not allowed to touch it. I just have to lay down the law with visiting kids. We have a LOT of kids come through our place, and all my stuff is amazingly still perfectly intact. They do not get free reign, that's for sure. That all being said, OP. It'll be ok. As long as your daughter is respectful about the whole thing. In fact, she should probably pay for the damage, but that's just what I'd do. If my kids break something at grandma and grandpa's house, you better believe they'd make me pay for it. Haha. That's why I love my parents so much. They instilled high expectations of responsibility from the time we were born.