I apologize but I don't really understand what you're saying. How did you get scammed?
If it's against the rules then you could report her for it but if it was totally legitimate then there is nothing you can do but move on. Dwelling on it won't make the gold come back, and it is just gold anyway.
There are times when I give my gold away and then see something I really want and could have bought had i not spent my gold but I just remember that what's done is done and work twice as hard to reach my goal. I wish you luck in your quest, and hopefully you will get the items you are looking for. Might I suggest starting up a Quest/chat thread in the Charity Forum? You will be able to meet new people and someone might see it and want to donate to help you with your quest.