So my partner has a daughter from a previous relationship whose nearly 9 and we have a daughter together whose nearly 4. We would like to move in together but the trouble we are having is the two girls do not get on. The older one will tell younger one she hates her, she had enough of her etc which then causes younger one to cry. Younger one then starts being horrible back. They have both been brought up differently as we have different parenting styles. I would say I'm more strict and hot on manners who goes out for the day and dad is very laid back, let's his daughter watch ipad whenever she wants and would happily stay in all day. I've looked after both girls for a few days and taken them both out but after few hours together it's like ww3. Any ideas how we can make this work so we can eventually move in together