What can I do to show her that I do not appreciate her unwillingness to help me out and get my point across that since she has constantly made my life difficult I am not going to continue to bend over backwards for all of her demands?
That is a good question and one we talk about a lot here. People have different opinions on how to address this. My own preference was to 1. work on acceptance of the fact that my mother had limitations and would never be able to give me what I wanted or needed.
2.Learning about the behaviors associated with the disorder so I could depersonalize them and that allowed me to respond rather than react to situations like these. When I reacted, I made things worse, confirmed in her mind that I was selfish, uncaring and mean. So I just fed her false beliefs about me and I was angry and hurt by that *plus* I had to then deal with the anger I felt towards myself for responding in ways that were against my values and who I wanted to be.
all of this is a process and it is different for everyone. I first had to hear myself learn that it was okay to say no and that I was allowed a voice of my own. I went from there to anger... .lots of it. Not a good time for me. Then i was able to do the above.
... .but it will become an issue even though anytime I ask for help in any way she can only help when it works for her or is conveinent for her and will back out at any given time if things dont go 100% her way.
Let her react however she reacts. She will be upset. She will yell and rage and dysregulate. Let her. Stop walking on eggshells with her. I am not saying to feed her anger but telling her "Mom I can not afford to finance a party or a trip for your anniversary" is not cruel or selfish. It is reality.
What do you think her reaction would be? Lets talk this through.