Of course you're right he would easily have access to the name of her regular gynecologist, whether she'd lied about the abortion or not. So either way, she'd be putting that person in danger according to your scenario.

Since there is nothing in the story to suggest he sought revenge on the person who performed the abortion (unless somebody can come up with another 'draft' script), obviously this was not a priority for Michael.

The person who was mainly responsible was Kay, and it was Kay whom he punished by taking her children (although by GFIII he had given them back to her, to handle their education).

So yes, despite the nonsense written into GF Returns, it still seems most realistic (for a fictional story, that is...) that Kay DID have the abortion.

Apple