Balbir can manipulate water at will, controlling the individual molecules as if playing with marbles. It is not quite understood how she can do this but it was theorized that these types of abilities result as an interaction of brain waves with the environment and self. The fact, that she can control water makes her deadly but the fact that she can (with a limit) get past the brain waves of other people and mutants, makes her one of the few mutants who are able to achieve an instant kill. How? She can crush the brain of her opponent with the blink of an eye. *300 music playing* She looks very innocent though, and she is. She would never do such a thing, would she?
Other than destroying brain cells, she commonly uses her "talwar-e-pani" or water swords to cut through the most toughest materials. She is a skilled martial artist, and teaches gatka later on in life. She derives the technique for manipulating water greatly from this martial arts and strict meditation. Lastly, the air surrounding Balbir, becomes very humid. She currently has no control over this "automatic" side effect, other than "manually" dispelling the water molecules in the air.