The ghost could also be a very playful one, but if upset uncontrollable. So maybe they're alone and they want someone to play with, but not the only ghost in the house. Maybe it used to be a family that lived there and died so the parents are wreaking havoc and the kid just wants to play?

Well we can start it in any time period, I haven't done a couple good original roleplays in quite some time. So this is refreshing for me.
Mind if we make it female/female and can I play the ghost?