mother in law oversteps constantly..

I am beyond irritated with my mother in law to be. my entire pregnancy has been clouded with her foolishness. She has this dire need to make this moment in my and my fiance's life about her. It started when we told her we were engaged. it escalated to beyond obnoxious after we announced our pregnancy. She decided she wanted to throw "us" a shower but it was going to be called a grandma shower. I was completely against this idea as I only wanted one baby shower and for our families to come together. For 4 months she put up a fight about this so now I'm 4 mo Prego and I'm like go ahead have it I'm tired.Then she says she don't want to and she's ok with one shower. Long story short we had our baby shower and the following week she sends out thank you cards without our blessing for my baby shower with my sons and her name on it and but leaves me and my fiance's names off the card completely. I asked my fiance to talk to her and he wanted to wait until delivery day and I said no bc I don't want drama at the hospital. He didn't want to argue with his mom and kept putting it off so I decided to send her a message. I told her how I felt and she sent me a message back saying she had no apologies and I was petty and ungrateful and in the same sentenced questioned the paternity of my child. She also said less keep distance which I agree we should . I do not want her to show up to the hospital with a change of heart bc I believe she owes me an apology and idk how to tell my fiance I want to put her on the block list.