Just a thought here, but do you think that your W may have been waiting for you to make a move on her last night? Kind of one of those things where she isn't going to go looking for it, but she wouldn't stop it if it happenend.
I know that sounds really un-romantic and it probably wasn't what you were hoping for at all, but it could be that she wants to improve and has absolutely no idea how to do so, or her discomfort and fear is getting in the way of her trying.
I know I have a very, very hard time initiating sex, although I think I am getting better. I feel like I have two left feet, I feel self-conscious, I feel like an idiot. Now my H has told me I have no reason to feel this way with him, but often these types of feelings aren't rational anyway, so there really is no comfort for me when he says that. I understand that this is my problem I have to face, and the only way I am going to get over it, or get better at it is to keep doing it -- fake it til you make it, as AD says.
But it was SOOOOO hard to just get started. I criticize my H for his less than suave attempts to initiate sex with me, but jesus, compared to me, he is a Valentino.
