Sorry to read, that your mom passed on. Must be hard, to be able to reconcile the past, without her here, to reconcile how your relationship with her became more of a roller coaster.

Not sure, if narcissism or not, you'd have to research further, than actions to determine of they had the 2 year old narcissistic injury or not. Along with other aspects.

I find, that trying to analyze family and others, is mainly useful when taking a moral inventory of self, and trying to understand and comprehend how and why we all interact with one another, the way that we do, in order to resolve the patterns in our lives.

What is it, about 5 years of therapy, that you aren't seeing progress in yourself?