My brother and SIL have 3 girls. They are 11, 9 and 6. The 11yo old doesn't get on well with the 6yo. 6yo I think tries to be all grown up like the 9yo and 11yo so is quite mischievous at times (hehehe!).

The 6yo is very close with the 9yo. Very close. The 11yo is close with the 9yo though. They are all so different!

They are gorgeous girls and there are times when they all get on great.

HTH, good luck with everything and making a decision