First I will say that I like my MIL, she is a nice person and I like her company. We live in different countries and see each other 3-4 times a year for a week or so.
However what annoys me is that she always seems to point out how DH is in a bad position / unlucky / failing. For example: she will ask about his career, and the conversation will go
DH "I have been promoted, now I do x. We are working on y as lately it has been causing issues"
MIL "oh, you are having issues with y?" [completely ignore the promotion bit]
...
MIL "what a bout Brexit? Is it affecting you badly?"
DH "not really, nothing has changed yet"
MIL "but are you worried? What about your house? Will it loose value?"
Same with the DCs. If one wakes up during the night (2min cuddle, back to sleep), in the morning she will act all concerned "do they wake you up every nights?"
These were just examples, but last night I wanted to laugh as it was getting ridiculous, literally every thing DH would say was answered by something negative. She isn't like that with me or anybody else, when we talk about other subjects than our family she isn't negative at all.
My theory is that as SIL (DH's sister) doesn't have a good career and has a nice but quite wild child, she doesn't want DH to have it all and is trying to find faults. SIL is definitely her favorite child.
AIBU to be annoyed? Or shall I consider myself lucky that I have an overall nice MIL and stop being annoyed by this? Or just get a laugh out of it...