She in Doc henry Lab on the right side of the door
Ok you need to get doc to start the experiment. She stands there while you talk about the quest with the doc and he tells you he wants to do the experiment on her. Then you go ask her if she still wants to and then you go back and tell him to go ahead with it.
Then the cut scene of them doing the experiment where she uses the modified pip boy.
As soon as she turns the pip boy off and the experiment ends, she runs out of the room back to her original spot and keene comes in and there is some interaction there and a decision to be made.
Sorry if you did all this, but that's where she is stuck looks like to me. Did you see them actually do the experiment?
Edit, just in case.. did you actually go get the chewed up pip boy?