AC, I guess as far as contacting your W goes, I think you are wanting to give her space, and you are honoring that. It probably didn't hurt to reach out to her. You can evaluate how she responds and go from there. You've only reached out sporadically - it's not like you're constantly contacting her.
As far as the dating site, not sure what to think as I'm in a similar position myself. One thing I get out of that is that she's definitely lonely. Like QoS mentions, it's not very likely she will meet high quality people,. After all, what's the quality of a man who dates a married woman.
