Jo wasn't all that happy with Faith right now either, but she was a little surprised that Dean was acting like he didn't know what she could possibly be upset about.
Which meant that either things weren't nearly as bad as they looked or they were a whole hell of a lot worse.
She wasn't even sure she was angry so much as hurt and a little bit confused. Her eyes stung just a bit, but she wasn't going to let herself cry right now.
She didn't trust her voice, so she figured she'd just let Faith and Dean do all the talking.