Originally Posted by
NikNox 
I just don't get it & feel so angry.
As a Mom I don't "get it" either. As someone having had experiences with alcoholics now, I understand. It's the addiction, and I know that sounds like an excuse or a pass for lousy behavior, but its not. It simply is the acknowledgement that your SD's Mom is driven by things outside of herself that render her incapable of being what you and I would consider a "good Mother" to be.
Prayers for your family. You are an incredible step-Mom!
Cheers,
~T