Oh my gosh this brings back memories to 8th grade lol I remember reading this!
Answer:
This quote is saying, when i spoke my wish, the monkey's paw started to move in a creepy, mysterious way. It's unique way of twisting can be compared to how a snake slithers
Her mother is the indirect object because you can take this out of the sentence for it to still make sence. Amy made salad. If you take the object out, salad, it wouldn't make sense
The cliffhanger ends a story or segment of a story with a situation of great excitement or danger.
Which could lead to high amounts of tension