Что творит свекровь? Не придет на 8-летие внучки!

I know it has been long time I haven’t posted but I just want to rant real quick. My MIL is probably the most selfish person ever. Even though we don’t get along, I decided to invite her to my daughters 8th birthday celebration next week. The audacity she has towards me saying that she “has to work all day”on a Saturday. Since when has she ever had to work all day on a Saturday, but a couple of weeks ago she was out in Vegas all week including Saturday. It’s sad how my SIL changed her ways of thinking, especially towards me, my husband, and her granddaughter. Mind you, she’s the only granddaughter that she has. Honestly, it’s heartbreaking 💔 cuz I know my daughter wanted her there.