Just go back to court and file for a modification.
She's really not in contempt, as there is nothing written in stone when he can see he child. I don't know why either party would not have anything concrete written there in the first place.
As for the school records and such, it's up the father to contact the school, and get it straightened out. If you take the petty things in front of the judge, and waste his or her time with it, it won't end well.
If she signed away the equity, and now wants it back, it won't fly.
Check the guidelines for support increases. in alot of states, your child support must increase xxx percent before someone can file for a modification. Keep in mind, the SUPPORT PAYMENTS must increase xxx %, not the INCOME INCREASING. Big difference.
She can over estimate all she wants, but as long as your husband has proof of how much he makes, it wont matter.