sgr daddy said:
but to the crux of the issue - would you address it at this time? Sounds like you have lots of wisdom

). Cheers.
Nope, I would not address it at this time. I know it is easy to say, but not easy to do.
The situation TODAY is that you are dating her casually. She does not owe you anything. And on the other side of the coin, you do not owe her anything either. If you are seeing SPs and that is what you want to do, good for you. You should not feel guilty about it, nor do you need to tell her.
Moreover, you should expand your dating pool and start dating other women if you are not doing so already. You seem to be developing a disease called "oneitis". An obsession for one woman and the thought that she is the only one that will make you happy. You seem to be too caught up in the this relationship.
Keep her as only one potential for a long term relationship and audition other women as well for the role. Who is the chooser here? Make yourself the one that chooses the woman and decides whether you want to be with them or not. Don't be the type of guy that waits around for women to choose you.
IF the relationship with her advances, and knowing what you know about her, you may choose not to advance it, THEN and only THEN does her SP career become pertinent.