My guess is that she's not being paid by you, and is no longer doing that as a job and realised that she was giving out a lot of attention for free when she should be focusing on other things. When I left camming to go travelling a few members had my e-mail address, but we talked sporadically. It was never "talking for ten days". Nope, we had shit to do. I was friends with these members for a while before I left camming though (in many cases years) and am still friends with each of these members five years later. I would not give that sort of attention to any of them while I weren't camming unless they were going through something big or I literally had bugger all else on. So maybe when she gave her contact details out she hadn't anticipated that you'd keep going as though she were still working online? Sometimes people do a nice gesture and then have second thoughts. Or maybe she has a partner who isn't comfortable with her giving that sort of attention to someone else when they're not even paying for it.
That's just my thoughts. Might be something completely different though, like maybe you were being needy/creepy/annoying. Either way, nothing you can do, move on.