Is it okay that I am salty about my aunt not pitching in for my graduation?
That depends. Why are you mad at her?
She's a selfish bitch who thinks she has all the luxuries
I understand you'd feel disappointed on her perceived lack of support. Have you considered she might be having unforeseen medical expenses or other financial problems?
I tried to reach out to her and I feel like she overlooked my graduation.
I am sorry that she overlooked your graduation but you still don't know why she didn't do anything. Also you don't know if she was even able to help you out financially.