You have the puppy and thank God you can handle the vetting. I would definitely be concerned about hypoglycemia .. please do start a thread in the breeders forum about feeding a puppy this young. Your vet did not give you any ideas of what to feed and how often?
As for reporting this woman, this is Texas, and I have little faith that anything will be done; but yes, you should try. What I believe would be a great idea is to flag this woman's CL posts from here on out. YTers would love to help with that.
Good luck with this puppy...she is very cute. Look forward to seeing her as she grows up.