I am so mad that I am still upset

My MIL visited for two weeks in March. We never had a close relationship but after her visit, I completely detest her and want nothing to do with her. At the start of her stay, she pissed me off by being stupid. Then she was being annoying during my induction “oh I don’t want to leave.” “I am going to spend the night at the hospital” ...I truthfully believe that my body didn’t correctly because of her making me mad and stressed. I ended up having a c-section and solely blame her for it.