Possibility

Aurdis, Billy, and Lt.Boartusk returned from the dungeon shortly after. They came back at just the right time. That is when all problems are solved.

Through the explanations of the Elves and Erend, they could tell what had just happened. The Daemon of Calamity attacked them suddenly by digging a hole in the underground palace.

Upon hearing about this, Aurdis immediately went to meet the Elves who were in charge of maintaining the Magic shield that surrounded the palace.

She and everyone else thought that the magic shield that had been protecting the palace was no longer working.

All the residents of the Elf palace gathered in a backyard that was so spacious that it could accommodate all of them.

They gathered on Aurdis' orders. The Elf soldiers were also on guard around them with an attitude of alert and ready to fight whenever danger came.

When there is a possibility that the Magic shield had been broken, they couldn't eliminate the chance of a major attack coming.