She's pretty sure it was the one that ran up the tree. Kinda hard to tell but a fair bet...
Your assessment is all accurate except that
Anna is now at the base of the tree, under some cover. She can climb the tree, if that's what you want. She's almost up at the end of the round. Fido has enough sense to stay out of the way...
Kilian has now reloaded his x-bow...he can't see a thing and Bruce has no decent missile weapon and is wondering what he doing up here. He can't see a thing either.
Tiana has successfully ferried the two archers all the way up, and they are entering the tree-house and can be wherever you want them to be, next round.
On the way up...neither of them could see what Anna was talking about, either. She was the only one who saw the transformed human.
It's your round again. No more shots were fired that round and you are all basically in the tree-house or on top of it, except for Fido.