Rozalia had chosen a different path to the two she had been given, in the end. She didn't go with Lighthouse, or with Elijah. She instead went her own way, staying the same solo path that had kept her alive all these years. The city was still in lockdown, but she knew how to disappear with ease.
She had given a brief goodbye to Elijah before taking off in the opposite direction, her powers lifting her into the sky, and in no time, the far distance. She felt a pang of near guilt at leaving, but she knew this was the best course for her and Elijah. She would only distract him, and he would distract her. A possible team, but the chances of them failing would be too great - and too dangerous in their current situation.

No, she was best staying underground until this sorted itself out - or at the very least, until she found a reason to reemerge.

Nightingale was gone, as far as everyone else was concerned.