Buffy look to Ambrose, surprised that he'd volunteer to spar with her given how much he loathed violence on principle. "Would you really? I mean, I didn't think that was an option. That would actually be awes-" She stopped, realizing that this might not be a conversation to be had in front of Lucius.
Who then had the gal to make it known that he knew Ambrose had fed off of her and imply that he wouldn't be able to control himself. She had to physically stop herself from attempting to punch him again, something she accomplished by grabbing a couch cushion and throwing it at Lucius as hard as she could.
"You might want to stop talking about things you don't know anything about," Buffy snapped.