My mom chose not to attend my college graduation because she was mad at me for something I can’t even remember. Fast forward 25 years later…

Now, years later, I was nominated (not even awarded) another very nice possible award by my boss and my bosses boss and my mom is LIVID I told my dad before her (and they live together). I hadn’t even seen her yet to even tell her. I forgot about her not attending the college graduation until she went crazy on me about not telling her about this nomination first. I have a masters degree that she never acknowledged yet either. She said, “Why didn’t you tell me about your award? You told HIM first”. It’s not even an award. Just a nomination. I’m so upset I feel like I can have nothing in life to celebrate ever. What is wrong with her? Why is she like that? I just don’t understand. Has anyone ever dealt with a parent like this? Why is she never happy for me?