Bare with me, don't know all of the details...
My sister's partner has a bad temper, frequently rants and raves about small things.
My older sister who lives with them told me that the other day they had a massive row over nothing really, it escalated..anyway in temper my sister sort of flicked her hand on the dressing table and knocked over some of his aftershave. I don't think it was intentional more frustration. Anyway he then proceeded to get her perfume and smash them one by one on the floor.
Another incident only happened yesterday, they were arguing again not quite sure what about but he smashed and broke the TV in the bedroom. He doesn't really help with my nephew and will rarely watch him so my sister can go out, just the other day my sister had to go out and my nephew was asleep in his cot and he still made her wake him up and take him out because he had stuff to do apparently.
AIBU to be concerned about my sister in this?