I don't think I'd like to know either, but if I knew there was something to know, I'd lose my entire mind until I knew it. It's a tricky situation, and you can only do your best with the information available to you.

And it sounds like you did, so I don't think there's anything to beat yourself up about.

[ He doesn't know everything, but he does believe Faith did the best she could, and possibly that not telling Buffy was harder for her than it would've been to spill everything. ]

Also, just— as a future thing from someone who is relatively well-versed in guilt. The option that makes you feel worse isn't always the best option, and you're allowed to get a sounding board. Ben's a good one.