Hi HB
I can't understand why they would force entry into your home, when you advised the police that you were more than happy to arrange a suitable time for her to collect her things when you returned home. No one's privacy/home would be safe, if this was allowed. Was the home in both names?
Yes, she is entitled to have her belongings, but you weren't denying her these. You were willing to arrange a time when you were home.
Her behaviour and that of her parents shows you how little regard they have for you. Whilst you are upset, and away clearing your head, they force access to your home. Charming!
You don't know what yarns she may have spun to them, and they appear to have believed her.
To be honest, leave her to her parents, and never contact her again. Cut your loses and breath a sigh of relief she has gone.
Much Love
Bute x