Jealous of friends whose parents "came around"

I need to have a bit of a whine, guys.

When I was in high school, I had a pretty tight-knit group of friends who spent pretty much all of our spare time together. They were there for me through thick and thin, they let me cry on them, they were patient with me when I was being an asshole, they were great friends and I was lucky to have them. Looking back, I realized that the reason we were inclined to spend so much time together and were so emotionally intense about our friendships was that we all had shitty parents. My mom was overbearing and manipulative and demanded that I take care of her emotionally, one friend's dad didn't accept that he was gay, another friend's parents were selfish alcoholics, etc. We all kind of accepted this as "normal" and therefore supported each other without questioning much.

Now, we're all grown up and still more or less in touch. Their parents have come around. The one mom got sober and went to therapy, another parent apologized for mistreating his kid, etc. My mom has only gotten worse. I should be happy for my friends, but I am honestly so envious. I'm afraid that they will judge me for being NC because they'll think I should be patient and forgiving like they were. And what's worse, my mom still contacts them. She sends them kind and loving messages. They think she's great. Am I crazy for thinking she's cultivating this image on purpose? If she can be sweet to my friends, why can't she try to make amends to me?