So... She just gets demoted? =/

There's one thing that's been bugging me the last day or so. When Simba arrives back in the Pridelands to overthrow Scar, Sarabi (the Queen) is obviously still alive. But once Simba defeats Scar, he and Nala take the throne. So... is it just tough luck for Sarabi? Game over? You're out? No soup for you? Just because Mufasa's gone, she loses her position?
or did Simba and Nala wait until her death to take the throne, and I'm missing that?
