She’s no blood relation, and I haven’t seen anything about Morgan having been in any parental role towards here, and she’s well over 21. Nobody else’s business.
That isn’t how the law sees it. Two adults who’d been adopted by the same family were convicted in California of “incest” shortly after the Supreme Court decision on Lawrence v. Texas came down.
The woman was the older of the two, engaged in a consenting relationship with the adult male, got pregnant, and the guy got charged.