Should I go to this baby shower?

My husband’s cousin, let’s call her Abby, is having a baby shower in a couple of weeks. We were once fairly close – well, we did things together but didn’t talk about personal things or confide in each other. She was around after I had my baby and I was (for some reason?) her matron of honor.

Fast forward a few months. Suddenly, another of his cousins, we’ll name her Heidi, with whom I was very close stopped talking to me. Abby said repeatedly that she had no idea why. Two years later I find out Abby told Heidi that I said some things I did not say because she was jealous of our relationship.

Now here we are one or two years later. Heidi and I have mended fences, but will never be close. Abby and I have not spoken at all. We are all cordial when necessary, so this hasn’t turned Into a big mess involving the entire family.

Anyway… Out of the blue, I get an invitation to her baby shower. Do I go or can I just send a gift? I don’t want to go but feel like I should. I don’t want to cause family drama, especially since its my husband’s side of the family. Opinions?

(I do know this is a decision only I can ultimately make. I’m just looking for input.)