Someone is going to have to point out the actual sexual assault part to me. This is wrestling. You know what it is and what it entails going into it. Sometimes naughty bits get touched.
Was this a girlyboy masquerading as a female and they didn't know it? Now, I could see about being upset with that. But that should have been already known ahead of time if these are competing schools that are familiar with each other. At that point, they could have refused to wrestle them. (and should have) And if they did know they were a biological male playing make believe, or even if it was a regular male, they could have opted out. (which they should have) But if they didn't, then they knew full well what happens during a wrestling match. Or is it they knew, then once their daughter started getting manhandled (pun intended), they then decided to voice their displeasure. Shocker here... teenage boys are much stronger than girls. What did they expect was going to happen in a sport that favors strength and speed?
Now, saying all that I assume this was some transgender freak of nature. Schools nowadays have separate boys and girls teams. But my point still stands. They should have known they were an it/wut. And refused to wrestle.
As an aside, I am firmly against male and females wrestling each other after about the age of 9-10. Or sooner if puberty kicks in.