Here, Batgirl talks with her friend of years Kara Zor-El, Supergirl. The crisis was becoming too overwhelming for her, and she felt impotent before the cosmic scope of the events taking place; but the Girl of Steel reminded her that everyone can make a difference; she talked to her of the firemen, doctors, and nurses aout there helping everyone... they are heroes too. After telling her this, Kara Zor-El flew off to save more lives. This was the last time Batgirl and Supergirl were together before tragedy struck.
In the novelization of "Crisis" this scene takes place early in the story, but an extra piece is added. After the "What have I become?" line, there is a car crash in the street below, and without thinking for a second about herself of her safety, Batgirl jumps to the recue. Even though she didn't know it then, she was also a hero... through and through.