OOC:
Backtagging: Yes.
Threadhopping: Fine by me. Check with the other player, too.
Fourthwalling: Sometimes. Depends on the meme.
Contact: PM this journal.
IC:
Flirting: Yes.
Hugging: Yes, but it will be awkward unless you're her friend.
Kissing: Maybe... It will be even more awkward than hugging.
Fighting/injuring: Playful fighting ok. Minor injuries ok.
Killing: No (though she's already dead at the end of her canon).
Using paranormal powers on her: I prefer to discuss it first.