You could always just ask her? I've had a couple of WGs give me their proper number - nothing happened with the first one because she went and got her eyebrows tattooed on and I just couldn't look at her without thinking "why the fuck would you do that?", but we messaged each other a bit before that. With the second one, we had a bit of a thing, then she disappeared, and now she's recently gotten back in contact with me. So yeah, you might have piqued her interest, especially if she's happy for you to know her real name.