The promise of a Fetus to his\her mommy

Mommy, I promise if you keep me, and please don’t let me die,
To always be a good little girl,
My very hardest I’ll try and try.
Mommy I promise if you save me,
I’ll do what’s right by you.
And never ask for a single thing,
I’ll even go through life without shoes.
I’ll be your little angle,
And try your not to cry if I can,
And if one day I make you mad,
I promise not to do it again.