Same degree of convenience.Actually her FBI "chums" are with Project Aries, not the Fifth Column. Different groups.
Which is all very convenient.seem to recall the egg's development being accelerated. It hatched not as a baby, but fully grown. Lisa probably matured naturally. Lisa 2 did not.
Human children can't kill adults with their bare hands by strangling them, which made Amy's ability to strangle daddy a bit...weird. It made me stop and go, "huh." Well designed alien species don't make you stop and wonder if the rules make sense. They just have rules that do make sense.
Again...convenient.Marcus' loyalty to his queen would include confessing his sin. Anna absolved him, for the moment, but made it quite clear what would happen next time.