Well I am glad that you recognize that you have control over yourself.
A couple of things to think about.
1) If you want to stop her from taking this from the house. Ask her to let you know what else is left. After that she is NOT to take anything from the house.
2) Change the locks if it would make you feel better.
Look man, you should be civil to her. YOU do not have to afraid of her.
"The difficulties of Life are intended to make us BETTER,not bitter". "Fear is a prison, where you are the jailer. FREE YOURSELF!" "Life is usually all about how you handle Plan B." - Jack3Beans