Gretta went into the Batcave the next day to find a 20 something year old practicing acrobatic tricks.
"Who the hell are you?!" Gretta snapped rudely. The young man looked up.
"I'm Nightwing. Who are you?"
"Gretta Hart. Ain't you supposed to be in Blüldhaven?"
"I live there. But I do help here when I can." He explains.
"Where are you from Gretta?"
"Why does that matter?" Gretta asked.
"Just trying to be friendly." Nightwing replies and Gretta leaves the room. Later that evening, Robin and Nightwing asked Gretta some more questions.
"So Gretta, when were you born?" Robin asked.
"December 22, 2002."
"Alright. Any siblings?" Nightwing asks.
"I had sister, Grace. She died."
"We're really sorr-" Nightwing begins.
"I don't want your pity. I don't want your sympathy. I don't want your friendship. I don't want anything from any of you. I JUST WANT TO GO HOME!!!" The boys left her there while she thought about what she said.