Was my friend right to dump me after I yelled at her for not carrying about my grief?

So my friend texted me just hi. I replying hi how are you. She said, “Stressed”. I asked what was wrong and she said she has so much in her mind and worrying about her problems and explained everything while I listened to her. I told her I was here for her. I told her about my math class I’m stressing about too but she didn’t respond to that.
I repeated myself but she still didn’t answer me. I yelled at asked if she was going to ask how it went. She said I ALWAYS do this and make everything about myself. She was stressing, going though a hard time and I just threw in my math class. I wanted to change the subject. She didn’t respond to that. Then I scolded that I’m having a harder time and my grandpa just died a month ago. She yelled at everyone has their own problems to deal with and they’re not always going to ask about my grief. She said she’s done being my friend because I only “think about myself” and have a nice life. Then stormed off.
People are insensitive.