My MIL doesn’t want a grandchild

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My husband & I have been married a year & together for 7 years total. My MIL & I do not have a good relationship but remain cordial & she doesn’t have a great relationship with my husband either. We all got along alright up until a few months before our wedding when she started arguing with me & him about honestly, I’m not even sure at this point. My husband has always sort of done his own thing outside of his family & is the youngest of 2 brothers who are twins & 7 years older then him (we are 25).. they are single men, with no children, who cater to their mothers every whim. My husband doesn’t. He was the first of them to move out (at 18 with me), the first to get married & now the first to have a child. This is our 2nd pregnancy, our first one ended in an early miscarriage, and this will now be our first child (I’m 33 weeks). My MIL has shown almost zero interest in my pregnancy & doesn’t seem to want to even be around me. I’ve tried to be nice & send her updates periodically, pics of the nursery, pics of our maternity pics, etc… and all I get back is short responses or none at all. At my baby shower she walked around with an annoyed expression and hardly spoke to me. She looked like it was inconvenient for her to even be there. Over the last 7 years of us being together she has talked about being a “nana” & now randomly has decided she hates the name (it was what they called her mother who is now deceased) stating it just isn’t meaningful to her & instead keeps googling random things such as “Goldie” & “Lollie”. My husband said “no” to both. I told them I don’t care at this point, whatever makes her happy. She occasionally (infront of my husbands entire family without me there) will randomly ask questions about boundaries with our son, rules, etc? But never acknowledges I’m even pregnant around me. I’m at a loss. To be honest, it hurts my feelings a little, but I don’t really care if she doesn’t like me, but it hurts my feelings to think she isn’t excited about her first grandchild or that she treats me the way she does & will expect to have some sort of entitlement to my son? Am I the ass hole? How am I supposed to make this better or do I just keep playing nice & ignore for the sake of my son & hope she tries to come around or be involved?