She's been noticed.
Linus has been calling all of the changes, collectively - because once one or two got overt attention the others were plain as day - "Jovah's hand moving among us".
Isabella is all right with the ship getting credit for her handiwork. It will be more accepted that way. No one riots over the god choosing to peer closely at them if they raise their hands to strike; no one theorizes about the appropriateness of meddling in the natural processes of things like childbirth when they believe Jovah is the active party.
Meanwhile she shadows Delilah. She makes routine visits to Monteverde to talk with Linus about this or that. (She can bring Micaiah, now that they're married.)
She gets steadily more pregnant. The heaviness is no burden to an angel, but it is somewhat physically awkward to be so bulky. She works around it. She's going to have a baby, and she just glows with it.
And, one day, for the first time since before the wedding, she finds Milliways in her and Micaiah's guest room in Monteverde.
"Oh, here it is, I was wondering when it would come by again," Isabella says.
[I found a door when Nathaniel was following me around, and I thought I might as well take him through and show him the place, and Shell Bell was there, and every time he spoke she just twitched like someone had pricked her with a pin unexpectedly. Nathaniel left, Shell Bell doored Downside, Sherlock confirmed the match.]
[I... warned him. Not in specific, but I explained why Shell Bell reacted the way she did and about alts. He wanted to know if he was going to be punished; of course I said no. He could still easily turn into someone else. Shell Bell said it could be 'just Downside' - that maybe Voice is only the kind of thing that happens to Nathaniel's template if they spend goodness knows how many years stuck there. We can't assume Nathaniel's going to turn into - anything bad.]
[Except that, and - paying attention.] She grimaces into the empty room of the pavillion. [And taking apart Downside, when we can.]
[This room's empty. If you can get away from any company you're with you can teleport right in.]
Hug. [I think Voice may have simply - never have been rescued. Not everyone comes out of terrible households the way you do.]