Yes, but she very clearly had battle damage on her. And considering the degree to which everyone absolutely shits themselves when anywhere near her, I'd say that is a hefty accomplishment.
Who knows. We haven't actually seen Pitou fight against tough opponents. Gon was even willing to challenge Pitou and was only stopped by Killua, who was still under his brother's brain implant control. We know now Knov is a coward, so we are sorely lacking references.