-Who was in the little girl's body? Don't know, it was never stated, but it's not someone who had been in the house before I suspect since they didn't recognise the chair from their treatments. More likely some outside body had fucked up a remote imprint at some point. Or some remote body was specifically trying to infiltrate the house, but that seems unlikely.
I don't remember which one November was. Was she the active that Agent Ballard had fallen for? Yep, that's the one
-Who was in Victor's body in the kitchen? Someone senior to Adele. Someone with a lot of power in the parent corporation.
-I thought the guy that attacked Adelle was dead? He was sent to the Attic, which they had suggested meant that his body was dead, but I guess not, just kept in a wiped state permanently I guess.
Don't worry, I'm sure it'll all become clearer, probably in the 2nd series, maybe in DVD commentaries?