Birth Story Photoshoot Pricing!

Savannah • Mommy to 2 babies!
The lady who did my maternity shoot is trying to extend her portfolio and wants to start doing delivery room photoshoots. Therefore, she's given 5 future moms (myself included) an opportunity to have her shoot our babies births! I'm very excited about this sentimental and personal photoshoot but only issue is, pricing. 
Since these will be her first 5 birth stories ever shot, she is letting us choose the pricing. I have NO idea how much would be a perfect amount to pay for this shoot. Please help!!!