Hi. First, you have used the wrong spelling of, "which". A witch is a character ;)
Okay, back to your question. One example of a flashback in the story, "Borders" is when the mom talks about driving to Salt Lake City to visit her daughter.
If you read the story, you might find some other examples. Hope this helps.
Take care,
Diana
House is the antecedent of the pronoun "it"
Belief. a writers philosophical assumption refers to their belief of what is true based on knowledge of the subject.
There's not always an adjective in a prepositional phrase, but if there is one, it's the word before the noun.
EX: He walked through the large entrance.
Prepositional phrase- through the large entrance
Preposition- through
Object of the preposition (noun)- door
Adjective- heavy
Hope this helps!