To be able to like... fling water around, that would be a separate waterxwind magic:
:: Magic [Waterxwind | ability to levitate and control direction of water]
That would have to be a separate magic slot. Controlling the density of water will have nothing to do with your being able to levitate it or not.
aslso this:
:: [Magic: Water | Can convert the uppermost layers of her skin into water that prevents her from being burnt by flame. Still can harmed or injured physically. ] P
would be active since it is manipulating her skin! If she is actively thikning about it and it is not ALWAYS water, then it's active magic