... I think my children took over the ritual to send your souls off to safety, and uphold the barrier cutting the Forest off from the rest of the universe until very recently. And then something in the barrier broke, just long enough for it to reach out and take you all.

I think that something was Audrey's death. Elsword confirmed it, but...

The kids lost a third of the power needed, and now they're both focused on maintaining the barrier while also keeping us out. Stubborn fools...

( it hurts to think about. did the need to protect others drive them mad? )