Okay, so I have four little sisters.
I'm 21, and I'm the oldest one. Thing is, I'm in London now, and my sisters are in Poland.
Two, living with my mum, are 8 and 6 years old, and they already started to fight with each other. I was expecting that, but not faster than in their teen-times.
My mum tried almost everything - talking with them, trying to explain situation...
Nothing is working for longer than one day.
After that, they are starting to shout, argue and saying REALLY bad things about each other (do you know how it hurts to hear something like that from 8 or 6 year old girls?).

Mum asks me for help, but since I'm to far to talk to sisters, I'm trying to think about advice.
But I'm out of ideas.
Maybe You can help me?