No, I won't leave if I was ignored by one person. Not everyone gets along. It is not a perfect world.

This may sound harsh but does it really matter she doesn't respond to your posts? The other ladies do and I suspect they would be hurt if you left without an explanation considering the size of the group. Concentrate on the women you have a relationship with and enjoy them.

I think you also need to be a little less sensitive as you may be reading nuances that aren't there. Maybe the woman simply doesn't know what to say to you or she has disagreed with some of your previous posts and doesn't want to cause an argument so she simply doesn't respond.