TMNT: new kitten in town book 1

Who is she?

Adah was walking behind Tiger Claw as he takes her to the weapon room.
"There are clothes there that you can take, just be ready by the time I come get you." He says opening the door "changing rooms are along the walls."

She nods at his words "vary well, see you when you come back," she says walking in with her tail swinging side to side. He watches her walk in for a second before closing the door, and setting his head on it.

He was thinking about Adah, but not in a romantic way, he was curious about who she is. "Where did she come from? And what happened to her?" Was the big question, and with them in mind he walks off to the lab.
Backster was writing stuff on a chalk board ramming off to himself.
"But if that were to switch," he said when Tiger Claw walked up behind him saying "Backster."

Backster jumped and just a girlish gasp when he herd him, barley catching the chalk from the air. "What is it?" He says annoyed at first, but looking at Tiger Claw he starts to shrink compared to him. "I mean, what is you need?" He says in a calmer tone to correct his words.
"I need to look at Adah's files," he says getting straight to the point. "Adah? The new recruit?" The scientist says back before Tiger Claw nods back at him. "I'll get them," he says opening a drawer of files "but to be warned there isn't much we know about her other than what the kranng told us." With that said he dusts off the file that he printed from Kranngs files and hands it to him. "There you go," it was rather thin, no more than a few papers thick.
But regardless of the lack of info, Tiger Claw nods and takes it to his room. "Better to know a little than nothing," he says to himself as he walks off.