A girl has semen on her RIGHT hand, but wipes it off immediately with kleenex. 5-10 minutes pass, hand dry, goes to pee, wipes w/ Left hand, any risk?

Almost impossible. For semen to fertilize an egg, it has to be deposited into the vagina and at the right time of the menstrual cycle. What you describe is very unlikely to have any risk of pregnancy. However, always practice safe sex, some sexually transmitted diseases could be transmitted through contaminated hands.