Man Zer0's never been the best part of anybody's life, but he has been the worst part several hundred times over. Needless to say, a hug is probably the last thing he would have expected from her. Woooow he wishes someone like Maya was here, she'd be way better at this. Probably.

After a couple awkward seconds, he puts his arms around her and half hugs/half pats her on the back. This is quite possibly the first time he's both hugged and been hugged by someone, he's doing his best here.

"You are most welcome. / Crappy job, but glad to help. / Ugh, these emotions."

Expressing any emotion other than WOO MURDER isn't something that Zer0's great at, but he does flash a ";A;" from his visor. See, he can emotion too.