You could ask her if she'd white-list you, which may decrease the number of times she'll be pestered.  I've seen both of my regular references multiple times, but not as a payback for the reference.  I go back because I like hot women that treat me special.

The reasoning behind it is solid but I don't necessarily want to give out my TER handle for a variety of reasons.  I had a provider hassle me here by PM and post angrily due to her seeing my less-than-outstanding  review of our session.
I would book a session with her, tell her afterwards how great it was (if it was that is) and ask her point-blank:  "Can I give your name as a reference to other ladies?"
If she says yes, cool.  If she has any other response (maybe, perhaps, I have to think about it) then just say, "Then I'll take that as a No"

Let's face it. Some ladies in the biz are very competitive when it comes to sharing info and ATMs. I had a regular ask me why I wanted to see other women and I told her I was falling in love with her (inside joke). Needless to say, she gave up the reference without a problem when I needed it. When I got around to seeing her again, our once very hot sessions were more biz-like and that was okay by me. If I see a lady more than 3 times, she is likely very special. What makes her special is that we value each other's time, she gives quality service and I pay her tuition gladly. Giving references is a courtesy of this biz and the ladies who get that are in ample supply, and you'll know that after one visit. If I like someone and I intend to see them again, I test the waters early and if she refuses or doesn't follow through with my request, vote with your $ and say next.

Personally, I wouldn't do it anymore than once.  She might start to feel used or slighted if you do it too often.

Have you considered RS2K or perhaps MyFastPass?  I've signed on with HotFriends and I'm able to use them as a reference.