Why is friendship, when you need one and rejected it

2 months ago one of my dear friend had a severe allergic reaction to latex she was already diagnose with that and had a epi pen with her which had save her life. She was at and outside activity where there was ballon hanging here and there, so she tought that those being outside might not be so bad but that was a mistake becaused with the wind latex get all over the food and eat some of it, she came at 2 fingers to die. Since then she is having a really rought time and decide to make decision and did a clean up in her life and after 6 years of friendship and seing her every week she dicide that I was part of the cleanup she no longer want to see and talk to me. I ask what i did wrong and say she don't want to talk about it. Rejection or being left out I am used to it, I have kept myself from getting close to others for many year to protect me from that since from the very beginning my mom when I was 7 left us with our dad and run away lefting us to see her whenever it please her which could be 3-4 times a year if we were lucky. But this I found it hard to deal with even tho there is missing pages to this story to end it. I understand she is going to a really rought time but I wish I could have been part of her healing process.