As far as I can tell, you really didn't miss much. The main points of this ep were:
-Petrelli talked to Hiro over the phone for a bit.
-We found out that the girl that was with Indian man in in cahoots with Cheerleaders dad.
-Cheerleaders dad found her birth parents, and arranged a meeting. Only problem is, they weren't her birth parents, they were just stooges.
I like the idea of Niki's powers, but the actress and subsequent scenes with her family kill it for me.