OMG!
I'm sorry to hear that about your best friend. That's terrible!
Passing away only 3 days after being diagnosed is crazy! Nightmarish!
Of what use are recent medical advances, for people to be scammed and/or coerced into getting mRNA vaccines, only to be struck down that way?!
I was coerced into getting one Janssen / Johnson & Johnson shot because I'm under the military's Tricare healthcare system. Believe me, I was in a position where I had too much to lose by refusing to be vaccinated entirely. After that, I was counted as "vaccinated" by the military, so I dodged all the boosters.
I have a family member who developed an abnormal heart rate just after being vaccinated. She's worried her life will be cut short.
But if anything, the cancer you described is much worse than that!
Again, I'm sorry for your loss.