I think she got used to be so cruel to you, it probably felt normal to her. Hopefully you made her realize her total negativity<--and that's putting it mildly from what I read in your posts.
Now, just don't let your anger get the best of you when returning positive chatter...
Me:49 H:47 S: 16 T:27 M:25 My EA: 2001 His PA: 10/2007, 6/2013 Separated, but H still in house
Find your Shambala: a place of peace and happiness.