Trying to let things go.. it’s hard

Hi friends.. I’m struggling to let things go. My mother in law came over today and we exchanged some pretty unpleasant things. She got mad that she had to wait until I was done pumping to come in then I wanted the baby to nap in his bassinet and her not be in his face stimulating him. She made a comment about me to my husband under her breath and I lost it. I unloaded years of hostility and I’m not very proud of it but I’d reached my limit. When I told her she was welcome to stay while he napped and that I would have made anyone put him down to sleep she told me to shut up and that is when I really came unglued. Anyway.. my husband is saying I’ve said my peace and I need to let go and move on but it is hard. Her apology for her behavior over the years was very passive aggressive and deflective. I know I need to relax because the baby can pick up on my emotions and it can impact my supply. Here’s to working on letting go.. even when I don’t wan to.