What is your favorite monster and is there a story to it

It is in the early to middle  1730's that one ms leeds finds out that she is pregnant. Ms leeds does not want her child and so curses it saying "If this child be born let the devil take it" (which i get not wanting another child as this is said to have been her 13th child) but when it was born is when the story splits. There are two different paths.

1: The child is born as a normal human baby, but over the course of a few minuets it grows bat wings, hooved feet a deer's head and a whip like tail and its physical body also changes. It then kills the midwife and fly's out of the house

2:the child is born but not as a human, instead it had bat wings, hooved feet a deer's head and a whip like tail and its physical body also changes to something inhuman. It then flys out of the house leaving behind the terrified midwife