Last time when she came over, her mom had been in a car accident, my mother-in-law asked about her mom and was told "I don't want to talk about it" and didn't say anything more. She then goes to sleep on the sofa because she doesn't join what activities there are, she's interested in herself and not others. 10 minutes later, my mother-in-law asks her son about the accident person's condition because he's in the kitchen, but she heard this and got very mad, "I told you not to discuss it, you can't respect my boundaries" more curse words, then out the door she goes, brother-in-law has to follow along with wife, and all this happens within 20 minutes. My in-laws are stunned but this has happened each of the times we have visited (maybe it's us?). I'm not crazy about my mother-in-law but she's no worse than many others, it's easy enough to ignore or tolerate her, out of respect for them and my wife. Why she can't do it is a mystery, and you'd think she could as she is some kind of psychologist and helps people with problems.