Mother in law passed away

I just had my baby 3 weeks ago and my mother in law passed away. I'm so heartbroken for my husband, all I can do is be there for him. Unfortunately due to Covid mother in law was unable to meet her first grandbaby. Her and I always had a close relationship but during my pregnancy we had our differences and I was so angry with her for the longest time, she said words I said words. We didn't talk for a while and now I feel awful I have so must grief and resentments towards what happened between her and I. I try not to bring it up to my husband because this is about him right now and I don't want to make it about me even though I know he is always there for me and has supported me when I've expressed my feelings. But I just can't get over the feeling of how things ended between her and I and all I want to do is pick up the phone and call her our just pop in for grilled cheese sandwiches or just watch a movie with her again. This is so heart breaking