The blessed island barely remained a couple of minutes after Lina moved Eini, Shiba, and the house to her inner world.
From the beginning, that blessed island wasn't something that could exist naturally in that world, so Lina wasn't surprised that it was broken so easily.
Other than that, only houses that weren't properly constructed were somewhat affected, so although everyone on the planet was scared by the sudden trembling, at most, there were some injuries from falling to the ground due to the commotion.
Even Border Town wasn't facing any real danger despite being at the border of the abyss left by the arid zone. After the blessed island was destroyed, Lina went personally to check it since it was an important place for Shiba and Eini. She felt that they might want to return in the future to remember things of the past.