My best friend passed away

my best friend passed away nearly a month ago and ill never get over it she got diagnosed with cancer just over a year ago, missed a year of school, lost her leg just for it to all be for nothing i didnt even get to say goodbye, she past away just as i arrived to her house to visit her, i found out she was dying just under 2 weeks before. i feel like people expect me to be over it but i never ever will be, i lost my person.