Angry with sis after wedding

Hi all, had my wedding on Sunday! All in all, it was amazing, but I’m feeling particularly hurt/irritated about some things that went down with my sister the day of. I had asked my niece and nephew to be the flower girl and ring bearer and my sister was mostly great during planning, which was a pleasant surprise because she is usually self absorbed and dismissive of me.


Fast forward to the wedding day and out became clear that she only cared about her kids having a fun time, and not my and my husband’s happiness or wishes.
First, she left her kids with me to wrangle in the half hour leading up to the ceremony when I should’ve been focusing on collecting my thoughts and emotions. She wanted to go chat with our cousin. Second, she proudly informed me after the ceremony that she disregarded the unplugged request made by the officiant so she could get videos of her kids. And third, she let her kids jump all over my husband and me during our cake cutting, rather than tell them to sit down and wait for their piece to be served.
At the end of the day, I’m pissed/hurt and kind of regret having the kids in the wedding. Don’t get me wrong—I love them but feel their parents should have been better behaved.
I feel like it would help me cope with these demons to hear from other graduated brides who felt hurt/irritated by poorly behaved or selfish family and how you got past it.