I find it impossible that she would be able to get pregnant at that age, much less deliver a baby through a pelvis not yet made structurally ready for child bearing.

This is a story really happened:

You can read here [link to www.francesfarmersrevenge.com]

And here at Wikipedia [link to en.wikipedia.org]

Did her father get her pregnant?

Lina Medina never revealed how she came to be pregnant. Her father was jailed for rape and incest but was later released.


parthenogenesis - a kind of spontaneous combustion



In parthenogenesis ("virgin birth"), the females produce eggs, but these develop into young without ever being fertilized.
Parthenogenesis occurs in some fishes, several kinds of insects, and a few species of frogs and lizards.
It does not normally occur in mammals because of their imprinted genes.
[link to users.rcn.com]