My 1:1s over the past several months have been a whirlwind of sentiments and emotions. I am severely underpaid in my role and my manager is well aware of this. She admits often that I am one of her prized employees and how I do great work and people love working with me. However, it seems like any time our discussions veer towards me wanting more, she pulls out arbitrary, one-off examples of criticisms she's heard about me. Keep in mind, she recycles the same 1-3 examples every time. And whenever I ask for specifics, she either can't think of anything in particular or has some completely off-base example of something that happened. Recently, she told me how someone I was working with recently said I seemed flustered when working on a project. I addressed that example and explained to her that there was, in fact, absolutely no issue between that person and myself. After she is done tearing me down, she goes back to describing how I am doing a great job and 'keep it up'.
How do I deal with such an unhinged, manipulative sociopath until I can leave this organization?