Hi I have 2 sisters who are 2,have never been apart. Yesterday they were not happy with each other and had a fight. I separated them when I went to work put them together again when I got home all seemed peaceful then after 20 mins one started squeaking really loudly when the other one came anywhere near her. Which then frightened the other one which led to a bit of chattering teeth and rumbling voices. So separated again. Reintroduced today again all seemed ok after awhile the same thing happened again. Do I leave them to sort it out? (obviously I'm not going to let them hurt one another.) Neither seem poorly in any way. I just don't know what has happened between them and my little girl is distraught that they have fallen out. Thank you.