Intervention From The Wicked

No one wants to die.

The Young Ones were by no means an exception to that.

They each had dreams and hopes—one of which was to meet the Oracle one day, and perhaps sacrifice themselves for Nature or their Sisters. 

Dying had to be done after their purpose had been achieved.

Not like this.

As all the Elves pounded on the barrier, now desperately desiring to return to the haven they previously rejected, they could feel the tremors growing louder, and the growls of the Monsters drawing nearer.

It was a frightening scene, one where the Elves could see death approaching while being unable to do anything about it.

The truth was that the Young Ones had never had recourse to fight a Monster before. Such tasks were left up to the Elders. 

And, even the Elders would rather avoid fighting Monsters than confronting them directly.