Was Hagar an Egyptian woman?

[dtango]

And in Star Wars, Luke Skywalker was from Tatooine.

Fictional characters can be from anywhere.

The point is what the fiction maker believed of his fiction characters. If the Priestly writer or the Elohist or any redactor changed some elements of the original story (fiction or not does not matter), then there is something he did not like or he did not like others to read.

Fiction does not use real persons but describes real situations and events that took place in the time of the writer or in the past. When someone does not want others to know about those events or actions, then there is something real behind fiction.