1. to one-up everything you say.
2. No regard for your feelings
3. Is entirely self-involved
4. Invasive in your marriage
5. Makes you feel inferior
6. Criticism oozes from her core
7. Negativity
8. Boundaries are ignored
9. Makes things challenging
10. She secretly harbors jealousy
11. Drama is the game
12. Gossip
13. You’re not even in the room
14. Grudges
15. A controlling person
16. Sensitivity is a strong suit
17. Flat-out insulting to a fault
18. The individual is two-faced
19. A complaining individual
20. Just a mean person
21. The selective listener
原文https://www.marriage.com/advice/family/signs-of-a-toxic-mother-in-law-and-how-to-deal/