She didn't call you because she didn't want to ask you for a favor. You fix her car even though she didn't ask you to, and you call that abuse.
And then you tell her that you will not be her maintenance man (even though she didn't ask you to be). And then you say you are not going to let HER negative attitude affect you.
Seems like you did all that to yourself. I can see why she says she feels like she's on eggshells. You don't seem to like things outside of your control. That's how she feels.
It appears that is what you need to work on.
M-43 W-40 2D - 9 and 5
Emotion, yet peace. Ignorance, yet knowledge. Passion, yet serenity. Chaos, yet harmony. Death, yet a new life.