Don't Lose Your Head

Poor Mami-San u__u I've gotten into rewatching Puella Magi and Mami's story never fails to make me sad which ACTUALLY that brings me to another question;

Why is it that Puella Magi get certain powers attributed to the wishes they make (such as Sayaka gaining healing properties because she wanted her boycrush to get healthy and Homura getting time bending abilities from wanting to redo her meeting with Madoka) and yet Mami didn't get like super LIFE ability for wishing to stay alive or at least the ability to regenerate? Because SHEESH for someone who averted dying to become a Puella Magi Mami san sure died from freakin’ gruesome deaths