One more thing -- I know that you're upset with her, but I do think that you should hold back on "venting" about her as much as you do. Not that you're wrong for feeling what you do, but sometimes indulging yourself in mean thoughts or words about another person feeds the toxic feelings. I know that I have to force myself not to yammer about what a PIA my mother-in-law is, but the more I complain about her, ultimately the worse I feel because the negative feelings take up most of the space of potential positive feelings.