Almost Perfect is a short story that is included in the collection Four Mothers, and is also available free on most sites.
It’s not just stepmothers who are wicked.
Bitsy’s insolent grandson has become too much of a problem for her to handle. She’s come up with a solution, though. If she can just convince a doctor to go along with her sinister plan, everything will be just perfect ….
Almost Perfect is online here: