AITA for refusing to go to my brothers wedding to attend the wedding of my sister-in-law instead?

Hey! I (25F) moved to France from my home country of Sweden seven months ago after me and my husband (27M) got married. I’ve never really got along with my parents. My dad had a temper growing up and would often shout at me and demean me, and my mum was very emotionally manipulative – constantly finding reasons to argue with me and point out things ive done wrong, even often being critical of my appearance. Meanwhile my brother (24M) was treated like the golden child that couldnt do anything wrong. On the other hand, my husbands family have always been so kind and welcoming to me, and to be honest they feel like more of my family than my own.

Since the move, things have only gotten worse. My mum insists calling every two days, and we’re often on the phone for like an hour at a time. She’s obviously upset that I chose to leave home, and I do feel guilty for not being able to help around the house like I used to. She’s always insisting we travel to Sweden for any event and since we moved to France 7 months ago I’ve already travelled to Sweden 5 times which is really stressful and expensive. When I do go home she’s really critical of me and my husband, and even his family.

So, onto what has happened recently – my sister-in-law announced her engagement and asked me to be a bridesmaid!! I was so so excited. My husband was also asked to be a groomsman. She told us the dates for the wedding – next summer – and we had no plans for then so it was perfect. When my mum called me (video call), I told her because i was excited, but she just went silent and clearly looked upset, so I started speaking with my dad.

Fast forward to recently – I travelled back to Sweden to see my family for easter. During dinner time, my brother announced his own engagement! I was and am so excited for him. Later on that day we were talking about dates, and he and his fiance had nothing in mind yet. I said me and my husband would be available whenever, the only date that doesnt work is the weekend of my sister-in-laws wedding. My mum butted in then and said that it depends on venues and things, but that they would try.