the symbol in this scene is the house. the house is used to represent the same protection that Miss Peregrine provides the children with. In this scene the house was just blown up and all the kids are devastated. Claire says the quote shown above
The symbolism in this scene is the apple. In this case the apple stands for the children themselves. Before Jacob and Emma's first kiss she gave him an apple. After he stepped out of the time loop the apple was on his nightstand all shriveled up because of the age. This shows how the time loop preserves the children's age, and what would happen if they were to step out of it.
I Pictured a person shriveling up and crumbling to dust like the apple on my nightstand(RIGGS 207)
Another symbol in these books are the birds. In this book they symbolism power, protection, and time. IN the beginning of this bookGrandpa Portman kept telling Jacob to "find the bird" or find protection and safety.
"Find the bird"(RIggs 33)
"He's our islands senior-most resident, better known in archaeological circles as Cairnholm Man"(Riggs89)
The Cairnholm man represents the past of the town, but the present for the children. The fate he suffered is the same fate that these children are still trying to avoid.
"and as doors to the next world go, a bog ain't a bad choice. It's not quite water and not quite land-it's an in-between place."(Riggs 94)
The bog symbolizes a point of transition between the two dimensions. Neither solid or fluid, but a combination of both. The place where it is possible to shift between states of consciousness.
In a way I think that the hollows from this story could be some sort of symbolism for the Nazis. After all, this was based in a time era of WW11. The Nazi's targeted a specific group of people, the Jewish and others. Like the Nazi's, the hollows only targeted a certain group of people; the peculiar.
"That tentacle mouth horror in the woods"(Riggs35)