"Ah, the remarkably thin boot is on the other foot now, isn't it? See, Lara Croft is a character from a series of games called Tomb Raider. She raids tombs." Maybe this girl raided tombs too. It would explain the heavy artillery. And the guns too.
"I run into you vigilante types all the time. The Punisher. Wolverine. Moon Knight, sometimes, but he's kind of..." He made the "cuckoo" gesture with his finger. "'Oh, look, it's the bad guy! Let's kill him!' Then there's a big mess because someone was desperate and stupid enough to go out robbing, and the only people that really get hurt are the people stupid enough to care about them." Some part of Peter Parker was naive, and some part of him saw an Uncle Ben in every evil-doer.