Giving my ex her stuff back tomorrow via a mutual friend as we aren't on speaking terms. Its been a while, I just needed this stuff gone from my house to move on. Debating writing her a letter and hiding it for her to find later.
Transferred to mutual friend and it's in his hands. I included a note in the pages of a book. It was short and simple. I told her I made some mistakes but I learned a lot. I thanked her for that and wished her well.