My two oldest dds are 15.5 and 14 and generally get on quite well. Or at least they used to. Lately they've been having petty squabbles with each other, saying mean things etc.
They are quite different personalities - dd1 is quite laid back, fairly chilled about things, doesn't often get upset etc. Dd2 is much more volatile and emotional and more needy.
Last night dh and I had been out. When we got home dd1 was waiting up for us and was clearly upset. Apparently she and dd2 had had a row and dd2 had said to her 'no-one likes you'
This comment was obviously said to have a dig at dd1 who apparently 'was being annoying'.
I aske dd2 about it in the morning, she admitted she had said it but then claimed that I don't pick up on the fact that dd1 says mean things to her.
How do you handle this sort of thing? I do try and stay out of things as much as possible, but it's difficult if they're squabbling in family living areas, and I can't help getting upset when they make nasty comments.
Advice please?