But...what's the alternative explanation? The kids talked like full-grown adults before the age of 1 because...? That doesn't just go away.
That's like being like, "Well, I met an alien 10 years ago. But I haven't seen an alien since then so...I guess they don't actually exist." No, you'd remember that shit and wouldn't just let it go if it didn't ever come up again.
In fact, it would be weird that she wasn't constantly bringing it up! Like "Hey! Where's the famous boyfriend you promised me! I thought you were sent by gods or something!"
Even if they eventually got tired of pretending and come clean, the truth is JUST AS RIDICULOUS as the lie they told!