Mermaid's choice

Chapter 1: The Rule

Hi I'm Katherine and I'm 12, which means I'm already in 7th grade.
I'm also a half mermaid because when my parents met, my mom was a human and my dad was a mermaid.
They also used to be both half mermaids but not anymore, because of the rule that had happened.
I live in a condo with my mom and my friend next door. It's a pretty small apartment. There were two rooms and a kitchen close to the living room.
I was in my room when my mom told me the two rules for all the half mermaids.
Mom opened the door.

Mom: Katherine?

Katherine: Yeah?

Mom: I need to tell you something important.

Katherine: What is it?

Mom: I'm sorry I haven't told you this yet but, if you ever get your mermaid powers, you have to choose your life.

Katherine: What life?

Mom: Where you have to choose to either be a human or a mermaid forever.

Katherine: Why?

Mom: It's just the rules.

Katherine: I can't do this.

Mom: You have to.

Katherine: I'm sorry it's just really hard.

I opened the door to rethink this all until the doorbell rang.
I opened the door only to see my best friend Sierra, so I let her in and went to my room.
Sierra and I sat on my bed.

Katherine: I don't know what to do, my mom told me the rule.

Sierra: You mean the rule when you get you mermaid powers?

Katherine: How did you know?

Sierra: My mom just told me this morning too.

Katherine: Yeah.

Katherine: So this means that we might have our mermaid powers soon?

Sierra: It could.

Katherine: If I had mermaid powers it would probably be with water.

Sierra: I don't know what mine will be yet.

Katherine: But really, if we had mermaid powers it would probably last a week.

Sierra: That's sad.

Katherine: Someday I hope that the rule won't control us any more.

Sierra: That's just making us have only one life. It's like they hate having half mermaids.

Katherine: That just bothers me.

Sierra: But, that's just the rules.

Katherine: I know.

Sierra: Do you ever wonder how the rule started?

Katherine: No, my mom never told me that.

Sierra: I know, my mom told me.

Katherine: Really? What?

Sierra: 300 years ago the mermaids and the half mermaids had a war for 100 years, but it was so bad that the full mermaids almost became extinct. That's why they made that rule.

Katherine: Really?

Sierra: Yeah.

Katherine: When did your mom tell you that?

Sierra: I don't know? It was a long time ago.

They heard the bell ring, so we went out of the room and Katherine's mom answered it.

Mom: Hello?

Sierra's mom: Hi. Sierra needs to go. It's almost dinner.

Mom: Ok

So Sierra and I did a friendly hug because she had to go home.

Katherine: Bye.

Sierra: Bye.

After Sierra left, I did the stuff I normally did and went to sleep.