I'm sorry you had to experience that. I think it really comes down to changing your mindset and working on yourself. If you allow your past experience to keep eating you, then you will eventually drown. You must learn to move past and focus on yourself. Sometimes I myself have a habit of dwelling on the past or paying too much attention to what someone said...but I learned that I can't keep overthinking about every single thing. Pretend your past experience with your MIL is a balloon and just release that balloon into the sky and let it go. Focus on your children, husband, friends....find a hobby and enjoy time with yourself...don't let a middle aged lady bring down your mood!
@Preeti thank you for your message. It’s just that suddenly some things trigger it, like the way she is towards my sil during her pregnancy. Then I just think how unfair it is.
I’m so sorry this has happened. Seek some counseling and work through that trauma. They will also help you to set clear boundaries with MIL so she can’t do this again.