[@Pathfinder]I don't know specifcs, but I'm pretty certain that either Peridot or Jasper mentioned something along those lines, or it was implied, during Amethyst arc about comparing herself to Jasper. And I didn't say they'd know who to serve, but I doubt that Eise is going to be able to hide Homeworld operations from them, and I didn't think they'd try to lie to the newborns if they, reasonably, asked about it. It just seemed hard to imagine that Eise would manage to get all the newborns on board if they're taken in already formed.

Also, given the time period, my point might not even matter, given that the only time Eise'd get a chance to take a fully formed gem would likely be sometime after they're formation, cause their would be round the clock security everywhere and on high alert, given how important Kindergartens are to both sides. Gems are literally the inly assets of value, and thus I imagine a team of Kindergarteners would be around to make sure they're born without issue or defects.