Timid, respectful, obedient, harmless Nathaniel.
And a monster who'd capture Shell off the street and force her home with him and destroy her.
She can't fathom it. She is not a perfect copy of the other Bells. She thinks - they agree, for that matter - that she's turned out gentler and softer than they. Certainly she did not have as fine an education, except perhaps compared to Shell Bell, except in music. But they are still undeniably, essentially versions of her.
She has to know what happened to Voice, to make him Voice and not timid, respectful, obedient, harmless Nathaniel.
So she tells Micaiah where she will be going, and asks Jane to take her there, and she seeks out Voice.
"I'll leave you be, now," she says. "Thank you for your help." She turns invisible so she won't alarm anyone at the Janepoint on Voice and Queenie's old world.
[Now, please, Jane.]
Invisible in Voice's world, Angela teleports to "one hundred miles Londonward of the South Pole" - Amariah suggested it as an unobtrusive place to hang out on Earths, suitable for people who do not get cold - and finds that she doesn't not get cold to quite the same extent as Amariah and requires a bit of hexing to be comfortable. Once that is taken care of, she peers into her copy of Stella's past-watching power, and looks.
She skips ahead. She doesn't want to look at more than she has to - not even with his permission, not when he hates the idea - and she can always go back. Where was he when he was - twenty?
Angela skips ahead in smaller increments still after the girl, because - that might be important. One of Voice's distinguishing characteristics as a torturer is that he never touched his captives. Shell had enough of a sample to know this to be unusual. And yet here is a girl. What is he doing an hour later - two?
This seems, if perhaps not formative, at least an examplar of the problem. Pastwatching is specific enough that Angela can just look in on the other dates with this person.