Hopeful to move forward

So, My in law called me and apologized for being so horrid to me all these years. I was really caught off guard because she has never been one to apologize for anything and so I didn't really have much to say to her on the phone. I decided to write her a letter because It's a lot easier to organize my thoughts if I can see them on paper. I think my letter is very direct and even a little harsh but I feel that these were all things that need to be said and I have held my tongue for long enough. Don't get me wrong, I don't just go off on her,I stayed respectful( as I always have)it was more like me telling her specific ways she has wronged me and how that made me feel. I hope this will get through that many of her actions have not just affected me but hurt her son and their relationship. Here's me being hopeful that we can move forward and at least have some sort of civil relationship.