I will try not to ramble
Person A owns a snake
Person B usually holds and plays with the snake while person A cleans out the snake cage.
All good so far. Been fine for a couple of years.
Snakey is quite large, so has limited other places to be, apart from in his cage, in the bath (supervised as he can escape in a few seconds) or held by a person.
Person A has decided they want to move in to a friends mini-flat.
They did not discuss anything about this with person B
They walked out and left snakey.
Person B has been feeding and watering snakey. And holding him.
But person B cannot supervise snakey and clean his cage at the same time. Neither can person A, which is why they usually work together.
Person A has been ignoring all requests for advice and assistance
Person B has been feeding and watering but not cleaning snakey.
Who is U?
YABU - B should find a way to clean out snakey
YANBU - A should be offering advice or assistance with snakey