Not dating her is a good idea, but how did you end it? Is she is giving you dirty looks because you are ignoring her perhaps? Did you explain to her that you don't want to date right now?
When we learn TTATT JWs call us bitter apostates. If we act kind to them thay won't have anything bad to say about us. Did you act kind when you ended it? Most people who get dumped are annoyed by it anyway and give dirty looks no matter how kindly they are dumped. So don't worry about what I have said too much, it's not that big of a deal.
Kate xx