I Found You (Harley/you)

(based after the events of suicide squad)

Y/n once had a relationship if the one and only Harley Quinn, that all ended when Harley's brother drove her insane, and they became the most feared villains in Gotham city.

Y/n after the break up focused on her career, a singer. She regularly travels around the world, doing concerts. She recently came back to do a show in her home city, but her stay will have to be longer then expected.

The Joker had broken Harley out of her prison, and Gotham went into panic. The shut off all exit to the city, to make sure they won't escape.

What happens when Y/n runs into Harley once more, with no escape this time?