Background, me (M) and my wife are both in our 50's and on our 2nd marriage. She wanted a quiet, quick ceremony in another state with only another couple with us. We were staying at FIL's 2nd home with said friends. A few weeks before the wedding, her father decided to fly out. Now, being his home, we can't say no. So he was there as well and there were no issues.

Here's the issue, she never told her mom and step dad we were getting married. A decision I don't agree with but she's a big girl. The wedding was not a shock as we've been together a long time. The issue lies with her mom and SD who hold 40 years of anger and resentment towards her father. When they found out he was there and they weren't notified they exploded. I got a 15 minute one sided convo with the SD and hung up on. She has had minimal contact with mom and almost zero with her SD since, about 8 months.

She's heartbroken with their selfish attitude and the fact they couldn't congratulate her. AITA?