Read the excerpt from The Land.

Now, my sister was a beautiful girl and I knew even Mitchell had eyes for her. But Cassie was not only beautiful, she was tough, smart, and just a bit cocky. She was six years older than I was and pretty much like a mother hen when it came to me; I knew she'd take my part. "Cassie, you know 'bout Mitchell?" I asked her.

"Course I know about Mitchell," she answered. "Why're you letting him beat up on you?"

"I'm not letting him!" I exclaimed in outrage. "You thinking I'm liking him beating up on me?"

"Well, if you're not, you'd better make him stop."

"Well, I'm trying."

"Well, you'd better try harder."

Based on Paul’s description of Cassie, what is the most likely reason she tells him to handle Mitchell himself?

She wants him to learn to behave like someone older like she is.
She wants him to grow to be smart and tough like she is.
She wants him to be a mother hen to Mitchell like she is to him.
She wants him to become just a bit arrogant, like she is.