Supposedly in the original version of Blood Ties she has lots of sex with both of them. In the tv version she has sex with neither. I guess it's a better triangle version than normal because both want her and she pretty much tells both of them no. One is the sexy young looking vampire and she tells him no, well, because he's a vampire. The other one is her ex-partner and I think they used to have a relationship once and now they are sorta still friends. So there might be still old feelings between them, but it's not like she really wants to be with him anymore.

For me, she is a really cool female character. Something just rings true to me about her. I remember, when I saw the show for the first time (BTW, if you ever decide to watch Blood Ties after all, IGNORE the pilot; it's probably the weakest episode of all of them), my first reaction was "I bet this was written by a woman (but in a good way)". I was quite shocked when I read that they have a male headwriter. And then I finally found out that the whole show is based on a book series by a female writer, so I felt vindicated :D

Btw, the best Blood Ties episode is the one where she keeps reliving a certain day. The main actress did an amazing job with it for my taste. Plus, that scenario can always be milked because you can show somebody being killed off and everybody's reaction to it, but it can be undone.