AITA? Am I wrong for not wanting my SIL to do my baby’s naming ceremony after months of distance and being repeatedly ignored?

I’m pregnant and less than two weeks from delivery. I’m emotionally exhausted from a family situation that’s making me genuinely scared of giving birth and postpartum depression. I need outside perspective.
In my culture, there’s a baby naming ceremony after birth that’s traditionally done by the father’s sister. The issue is my sister in law.
She has known about my pregnancy for 20 weeks. During that entire time, she did not reach out once to ask how I was doing or how the pregnancy was going.
Before she got married, we were close. Even after her marriage, I was the one making effort. I sent messages, snaps, and reached out for big life events. I kept getting left on read, so I eventually stopped because it felt one sided.
When we told her about the pregnancy, the first thing she said was not about me or the baby. She said, “Can I ask our high priest for the name since I’ll be doing the ceremony?” It immediately felt like the moment was about her role, not us.
My husband met her in London and asked her to please reach out to me. She said she would. She didn’t. About ten days later he met her again in India and she still hadn’t reached out. When he asked why, she said she hadn’t gotten around to it. Meanwhile she’s been completely normal and friendly with other people, including my friends and her own friends.
For two years, my husband has asked her if there’s an issue between us. She always says no. He’s brought this up to his mother many times, but she never addressed it.
She finally reached out about five days ago, weeks after my husband asked her to. It was a basic “how’s it going, are you excited?” message. At that point it felt performative.
She has also told many people in the community that she’s coming for the ceremony, but never directly told us, the parents. My mother in law sees nothing wrong with that. I do.
Now the ceremony is close, and the idea of her doing it is causing me extreme distress. This is my first child, and the thought of someone who showed no concern for me stepping into a special role feels deeply painful.
I spoke to my mother in law. She raised her voice and repeatedly asked if I ever thought about how much this hurts her and my father in law. She focused entirely on her pain and her daughter’s embarrassment, not mine.
She said that if my sister in law comes and doesn’t do the ceremony, it will look bad in the community and be disrespectful. Her solution was either let her do it or tell her not to come at all. She even said she would tell her the truth, that we don’t want her to do the ceremony.
At no point did she acknowledge that I would be hurt if this happens, or that this will permanently affect how I remember the birth of my first child.
To be clear, I am not telling my sister in law not to come. She is welcome to come as family. I just don’t want her to do the ceremony.
Am I wrong for feeling this way?