It's been a time since I wanted to work more on my version of Scar and Mufasa's past.
In my version, Ahadi and Uru didn't had the same affection for their cubs, Mufasa was Ahadi's favorite and Scar was Uru's favorite, and both parents wanted their favorite sons to become kings...
Also, I like to think that this Uru was a ''Zira type'' of mother, she wasn't a obsessive psychopath, but she had great love and admiration for Taka/Scar and believed he deserved the throne and would do anything to help him.
In this image, Scar is talking with his mother probably about the way Ahadi was treating him
Uru: Don't worry my young prince. Your father knows nothing, you'll become a great and wonderful king
Taka/Scar: You think so?
Uru: Of course, I would do anything to see as King of the Pridelands
Taka/Scar: Anything?
Uru: Anything...
Characters and all Original images used for rendering and background (C) Disney