Five months later ,

Only Damian's father wasn't accepting of his girlfriend .

As of that she became firebird and to her surprise Damian joined her as Nightwing. 

The rest of his family had been accepting so , why quit ?

He just wanted to join her .

Imagine the shock Kara had when she saw the newspaper picture of flamebird and Nightwing .

They had to explain to the Justice league why  Robin retired and why Superboy is a girl .

The person who asked that got a black eye .