What details suggest Grendel is a creature of pure evil? (lines243 and 253)

the pronoun reference replaces a noun, but you have to make sure there's no room for confusion.

in the first sentence "her" could be referring to shely or to the sister. the answer there is "shelly called her sister and told her about the new baby."

in the second sentence "it" could be referring to the roof or the floor. the answer there is "since the roof leaks on the family room floor, we need to repair the roof."

what can i you with?

you need to write a question based on a prompt. you have not given the prompt, and therefore this question cannot be answered on unless you provide it.