My boy is a hormonal machine right now and it's been going on for months now! Just this morning I was playing around with him and he got a little too excited and began to puff up any try to mate with my arm. What I did was calmly tell him that I love him but I'm not interested and then I slowly put him down onto his cage. He just continued to do the deed on his perch there and I stayed calm and still and pretended I wasn't paying attention and he finished himself off there. I have it easy now because he already knows his perch feels good and he can do it there. Hopefully your Quaker will discover some kind of inanimate object that works for her too. Cause once they know that, they realize that it's a good alternative to humans
I do the same when he gets too riled up and bites me. I just put him down calmy and gently and he settles down pretty quickly.
He even tried regurgitating for me a few weeks ago and the same method works there too. I just calmly told him that I love him but I'm not interested and then I put him on my knee, away from my face, and then distracted him by talking about something else. Worked like a charm. Just don't be dramatic about the hormones when you react. Good luck!
There are other things you can generally do too like giving them a little more hours of darkness, and lowering the fat and proteins and sugars in the diet. But I'm sure other members can be more specific about that because even though I know I should do that I don't because thankfully I don't have to worry about egg laying.