I honestly thought I was safe from this till they were teenagers, but I got home from work this evening to find elder daughter in tears and younger daughter in a strop. Apparently they've been at each other all day and I've got a horrible sense of foreboding that this is going to continue for the whole holidays.
For context, they're very close in age (14 months apart), DD1 is 10 and DD2 will be 9 in August. They've always got on pretty well, but DD1 has severe OCD and health issues and DD2 is very bubbly and confident, and lately they seem to wind each other up. Today, DD2 told DD1 that she's embarrassing, which triggered a total meltdown. DD2 got it in the neck from DH and got upset because DD1 is "the favourite", whereas she gets told off for everything. They then both seem to have been as horrible as possible to each other for the rest of the day and I had to do an hour of peacekeeping negotiations when I got home to achieve a tenuous ceasefire.
I have a horrible sense of dread that they're going to keep this up for the whole summer. Anyone got tips on how you can get sisters to tolerate each other? I can't face this every day till September!!!