Thank you very very much for your nice help and details

She never conatct me about I own her money after I moved out until I found it from my credit report. Because I thought we already settle down. She aggreed to use my $ 300 deposit to balance the two weeks notice I gave her. That is why I got no return from my deposit. I will try my best. As you told me.
It is a big lesson. I am searching for these rules for one day, but got not point. Thanks for your nice help again. I appreciate your valuable time.