<span>The answer is repetition of related words</span>
This is a compound sentence containing 2 independent clauses separated by a conjunction.
Answer:
The author cited her sources twice. You only need to specify the location of the quote once. So, in this case, you don't need to include (Collins 21). You already said where the quote came from when you said "Suzanne Collins, chapter 13, page 21...".
how to fix it
First thing is the ranch which helped develope Eliza in many ways like Elsia was a very content person she would never ask for more. She was beautiful, confident and smart. But when the stranger shows up and she trys to prove him wrong she finds out she is not as powerfu as she thought.