That is the theory that has the most adherents among scholars at this time. The woman whose husband could be Pharaoh was called “the throne princess” or “the red princess.”
The book I noted above costs at least a hundred dollars now, but it must have been in a school or public library when I was a girl in the 1970s.
I graduated history of art/physics in 1967 from U of Chicago. Picked it up in one of the Egyptian art classes.