I'd have to ask what her lack of response is intended to communicate to you. If someone cared so little about me that they wouldn't acknowledge or honor my request, I'd have to consider what our R is. I'd let her know that she is communicating with you, but what she is communicating is causing a problem for me.
You may have to decide if you're willing to live with someone who won't respond to you. It would be an integrity issue for me. It looks like a "crucible moment" is developing.
