My brother has just lost his father-in-law i.e. his wife's father. I rang to offer my condolences (as you do). My sister, when being told by our brother of the news, said, 'Oh well she didn't really get on with him so it doesn't matter' within earshot of my brother's wife.
I mean I love my sister and all but am I being unreasonable to think that this was a deeply stupid thing to say? Wouldn't a simple 'sorry to hear that' have sufficed? She is an idiot, isn't she?