The defeat and arrest (and gagging) of William Kamala does not stop the music playing in Dinah's heart. But it does make her think that maybe she'll have it under control soonish. Maybe.
All she knows is, that when Ollie touches her on her arm. When he smiles and starts singing, it makes her happy, and her toes curl in her boots.
She is the one who suggests Batman as the seventh member of the Justice League. Green Arrow seconds that nomination.