That would be the most cowardice title shot ever. She got beat definitively to someone, got her ass beat hard, and decided to play scare and stop fighting indefinitely.
If she comes back to fight Miesha, its because she already knows she can beat Miesha. And Miesha herself had to show Ronda that Holly was beatable, in order to take that aura away from Holly.. Ronda wasn't able to forge a way herself and needed someone else to do it. Make her fight Holly first, even though it would be less psychologically demanding now that Miesha already beat her.
If she comes back to fight Miesha, its because she already knows she can beat Miesha. And Miesha herself had to show Ronda that Holly was beatable, in order to take that aura away from Holly.. Ronda wasn't able to forge a way herself and needed someone else to do it. Make her fight Holly first, even though it would be less psychologically demanding now that Miesha already beat her.