Petra's eyes shifted to his extended hand and the faint frown became a much stronger frown.  "Forgive me if I don't shake hands.  You really are quite new here, Colin."  There were far too many mutant powers that could be conducted by touch, and paranoia when faced with the unknown was the best option.  "You can call me Petra, if you like."  Her grandfather's infamy and multiple betrayals had made her last name a risk as well, and trust was hard to come by.<br/><br/>"Well, at the very least, welcome to Xavier's Institute.  I'm sure you'll find yourself a niche here somewhere."  She sipped her cider again, her eyes returning to bore into his.  As friendly as he seemed, he was awfully naive and in her experience, naivete lead to trouble.  "I hope you are a fast learner.  You could get yourself into a lot of trouble offering to shake strangers' hands here."