More than one || HP [DISC.]

Book 2: Chapter 2

"Kids come here for a minute!" Dad called from downstairs. Harry and I ran out of my room were we were doing our homework, and downstairs.
"Yeah, dad?" I asked.
"Well, I want to talk to you kids. Now, this will come as a shock but, Rose you have a cousin, (Changing her role if that's okay _Sirenjinx92_ ) named Cathryn. She has lived in an orphanage for most of her life because her father, Regulas Black, was killed. Of it's okay with you two, she will be moving in with us." Dad explained, his eyes fixed on us.
        "Are you serious!? I have a cousin! That's awesome! Of course she can live here! I won't be the only girl!" I cheered. Harry chuckled, nodding his head to show he agreed.
        "Alright, excellent! We'll be picking her up tomorrow, so we need to get her room ready!" Dad said, clapping his hands together.
        "Alright, that should do it!" I panted, smile at the room. We had just finished painting and Dad was levitating all the heavy stuff into the room using magic.
        "Yep, that should be it!" Harry cheered, sighing in relief. I giggled, leaving the room to ask dad if he needed any help.
        "Nah princess, I've got it! Why don't you and Harry go to bed? It's 11:30 after all!" Dad suggested, laying down a box.
"Okay, love you daddy!" I said, giving him a hug and a kiss on the cheek. "Night Harry!" I called.
"Night Rose!" Harry called back, and I heard his door close. I dropped into bed, smiling at the fact that I will get to meet my cousin tomorrow!

                          *Time skip*

        "Rose, Harry! Get up, we're going to get Cathryn today!" I heard dads voice call from downstairs. I shot up, and jumped out of bed. I grabbed pair of jean shorts, and a white and black off the shoulder top, then got into the shower. I quickly showered, then got out. I got dressed then brushed my teeth. I put on a bit of lip gloss, then skipped out of my room, but that ended up with Harry and I crashing into each other.
"Are you alright?" Harry groaned, helping me up.
"Yeah, I'm fine." I sighed, giggling a bit. Harry chuckled, then started running downstairs. I ran after him, jumping the last few stairs onto his back. Harry caught me, holding me on his back as he jogged to the kitchen.
        "Hey you two! What took you so-" Dad stopped talking as he turned around. He smiled, and laughed. "That's why! Weren't up there snogging were you?" Dad asked, cackling. My face turned red, and I jumped off of Harry's back.
"Dad, we're not even together! And even if we were, we wouldn't be snogging! We're only twelve for merlins sake!" I grumbled, my face still hot.
"Oh, I'm sorry. It was just the look on your faces!" Dad chuckled. "Anyway, eat your breakfast, we're picking Cathryn up at 10." Dad said, giving us breakfast. We thanked him, before digging in. After a while, we finished and put our plates in the sink. Kreacher will wash them.
"Come on dad!" I rushed, bouncing on my feet.
"I'm coming, I'm coming!" Dad shouted playfully, coming to stand by us. "Grab on!" Dad said. We grabbed dads arms and we apparated. We landed in front of an old building, with a fence and a playground. There were children playing, and adults watching them from afar. Dad pushed a button and the gates opened. We walked inside and went to the doors.
We walked inside and up to the staff desk. "How may I help you, sir?" The lady asked.
"I'm Sirius Black. I'm here to pick up my niece Cathryn Black." Dad told the lady.
"Alright, go ahead up the stair case and to your left! There's a brown door with flowers on it. That's hers!" The women instructed, pointing up the staircase. Dad thanked her, before going up the staircase with Harry and I following.
        We reached it after about five minutes of climbing and excited chattering. "I wonder what she'll think when we go in!" I wondered.
        "Yeah, just hope she doesn't think we're a bunch of nutters." Harry said under his breath.
        "She won't. Her father left her a note about being a witch and such." Dad told Harry, waving a hand. We came to the door and knocked. A girl my age answered the door, and smiled at us.
        "Hello!" The girl said cheerfully.
         "Hi, I'm Rose!"
          "I'm Harry!"
          "And I'm your uncle Sirius!"