Selfish MIL

My mother in law and husband got into it today. She said what a shame she didn’t see her grandkids in their costumes on Halloween. Halloween is the same day every year and she could have come to see them. My mother passed away unexpectedly end of September it’s a shame she will never get the opportunity to even get another picture as usual. She had the nerve to mention to my husband again something about me naming my first and last daughter after my mother and both of my grandmothers. Not to mention my mothers middle and grandmothers name is also her mothers who she obviously hates. I choose to add my other grandmothers middle name after my mother passed because she suggested it. My husband told her she’s so selfish. He’s told me she thinks the world should revolve around her. She was going to watch the baby, I had already placed the baby on daycare waitlist because of her unreliability. I have a job that counts on me. She told me she couldn’t watch the baby due to her health decline and falling all the time and I told her I already put her on waitlist. Now she wants to bring up the fact she wanted to watch the baby and I put her on the waitlist anyways.