[Ninja]

Just say no.

If she asks you if she can use something of you, just say: "no, you cannot. I worked hard on this and for once, I'd like to take the credit myself. Shoo! Shoo!"

You have two choices here: either you A) suffer her Glare Of Death (no doubt she has one) for a few days until she realizes that she will have to find someone else to leech off, or B) you quietly sit still and take it, swallowing both your pride and your self-respect while she eventually gets a raise/promotion/exciting project as a reward for all the hard work "she" has done.

Think about it for a moment. Really think about it. Do you honestly believe it will end here? Now she's just mooching off your time and effort, but what will she do in a few months? People like her always keep trying to cross your boundries and once they do, it's much harder to push them back rather than standing your ground in the first place.

Just. Say. NO.