MIL from hell

I could write a book about all the reasons why I can’t stand her. I have never really opened up to my husband about how much I dislike her bc I know he puts her on a fucking pedestal. But today I’m at my wits end. She is the absolute worst and I’m so sick of pretending I like her. Husband and I have been together 10 years. Married 3. We went through a separation earlier this year bc we were having problems but we are back together and working on it. An incident today with my MIL is making me feel like I just don’t even want to work on things with DH bc I can’t stand to have her in my life. And also bc he’s so blind to it and thinks she’s so perfect bc she’s ‘so successful’ 🙄 anyone been in a similar situation? What did you do? I want to talk to my husband about it but don’t even know how to approach it ugh