Peridot doesn't draw blood, but it's a near thing. Lambert has to bite his lip against a shout when her teeth sink in into the meat of his (thankfully calluses) palm and he jerks his hand back so she isn't as trapped. Whether she ends up coming along for the ride depends on whether she lets go or not..

"Calm down, Peridot!" He hisses, in the grand tradition of people who know full well telling someone to calm down is going to do absolutely fuck-all to make it happen. Maybe using her full name for once will actually have some effect, but who knows?