If he used money he earned while married to you to buy the new house, you have an interest. Get a lawyer.

This commercial real estate. What does your lease say? You may want to move and cut your losses.

If no one was awarded custody by any court, they are holding them hostage without your permission, call a lawyer.

Pay the utilities - it is only 2months. Then have her move or you move. You can sue her later.

I doubt the lease said that he can trash the yard. Take plenty of pictures. Then get help trashing his trash.

You did right for a half year. Then why did you not call and ask her to change her address., or do a "return to sender"?

Take what you signed with the realtor and the real estate contract and the HUD-1, to an attorney to review.

Since you have joint legal custody, you should decide what you want to do. At least talk to a lawyer.

You have to decide whether the nuisance is so great, you have cause to file an escrow action, putting your rent into court to get the matter resolved.

If you are gone you cannot be evicted. But there can be some restitution awarded.