Ok, so to clarify a bit...
My initial text with her wasn't "Hey bb, I got a bonar"
We were just talking and I just brought up the fact that for some random reason I woke up super horny. I wasn't trying to start a "sexual" conversation with her, but the topic of the conversation was sexually related. But with us, our conversations are all very casual. She tells me her slut stories, I tell her my man slut stories. It's a pretty cool setup.
And, she clarified to me later that it wasn't like, 2 hours straight of masturbating, but more like... she would masturbate, get herself off, then 15 minutes later be super horny again, and go at it again. Repeat for 2 hours.