You gotta believe her entire life involved those fingernails:
Every single thing she did had to involve forethought about not breaking them. Imagine every single little activity you do in life without thinking about, then imagine how she could have even simply done it.
Hopefully, she''ll take having lost them as a "blessing in disguise".
(Oh, BTW, it is virtually unheard of for someone to be ejected from a motor vehicle when they were seat-belted.)