Boop, that is terrible, be glad they will be gone! I could not imagine how hard that must be to live across the street from the man that was going to marry your daughter and his new girlfriend! and then they take advantage of you!
My heart hurts for the loss of your daughter.
I had a rental for a while and It was really hard for me to understand how people can live in a home that does not belong to them and think they can do what ever they want to it! The people who lived in my house managed to stay there for a year and half, never paying the full month rent (never except a partial payment for rent because if you do the eviction date moves each time, well it did in California in the 1990's)
When they finally moved out they stripped the house so bad, even taking built in appliances, light fixtures, fire place insert! They even took doors from the bed rooms and faucets from the bathroom! I will never own a rental again.