[Tara waited until Faith was out the door and a good few minutes away before she looked back at Willow with a disapproving frown. It's not that she didn't trust her, but in this moment, she seemed reckless.]

Faith is dangerous. You were the one who told me that. How do you know she's not going to go overboard in watching Oz and attack him?

[She gestured for Willow to follow her as she went upstairs for the few ingredients she needed for the spell. There were a couple of loud shuts of drawers, signifying her annoyance.]

I don't know Angel or really what's going on in his mind, but if Buffy were here, she wouldn't want to trust Faith either.