I was reading some of the Empyre story where these children came to the FF. I don't remember her secret with Alicia about the other child. interesting.
Years and years ago they had indicated that Skrulls, some, would pose as inanimate objects across the galaxy, mostly as spy service to their empire. At one point when that thing happened that locked skrulls into their form (they'd lost their power to change form for a bit) they might have shown that too, skrulls locked into forms that were inanimate.