I don't own Harry Potter just my Oc. And guys this isn't the chapter where she rescues Harry I decided that it would be the next chapter instead. So enjoy this chapter.

Chapter 3

Ellie's p.o.v.

The next two days was the worst days for me, I told my dad that I was going to call long distance to see if Harry will answer the phone, as soon as daddy said yes I picked up the phone to call Harry. I picked up the phone and quickly dialed the U.k. Number waiting anxiously.

"Vernon Dursley speaking." The man said

"Um...hello is Harry there? Harry Potter? I'm Ellie his sister." I said

I never expected the man to yell at me.

"THERE IS NO HARRY POTTER HERE! I DON'T KNOW WHAT YOURE TALKING ABOUT!" He shouted making my ears hurt that I pulled away from the phone hearing the yelling. "NEVER CONTACT ME! DON'T COME NEAR MY FAMILY!"

He hung up leaving me baffled, he didn't have to yell at me for asking, I dropped the phone and cried a bit. I hated not knowing if Harry was okay. Once dad heard me crying he ran to the hall and comforted me and I told him what happened. I've never seen daddy so mad before, he immediately took the phone and dialed the number.

"Why don't you heat up the leftover pizza and have it for lunch?" He said "I'll be on the phone for a minute."

I nodded and went to the kitchen, occasionally I heard whispering from my dad.

"All she wants is to talk to him!" I heard him say. I heard more whispers. "Look we had a deal if she ever wants to contact him then let them! Their only kids!"

"Dursley, let Ellie talk to him or else or do I have to go there myself?"

The beeping sound from the microwave snapped me out of the conversation, I took the warm slice of cheese pizza and placed it on the table. My dad returned to the kitchen with a sigh.

"Well, he told me that Harry wasn't home." He said "That when he gets back he'll call you."

I nodded but just hearing the voice of that man it sounded as if he didn't want me to see Harry. After I finished my lunch I felt hungry for some reason. Dad went back to clean the outside of the house boat.

I went to my room and grabbed my backpack inside had my wand, my wizard money as well as my small coin purse that had muggle money too.

"Dad, I'm going over to Lucas's house for a bit." I told him.

"Call if you're going to be late." He said I nodded my head and ran to Lucas's house as fast as my feet could carry.

'I can't help but feel that something is wrong...I hope it's just my imagination.' I thought.

As soon as I set foot in Lucas's house I told him what happened, he sat there not saying a single word until I was done talking.

"That is weird."Lucas said "Why would that man say that Harry didn't live there? And if your dad talked to him it sounded that he knows him."

"Did you forget? I'm adopted so he had to see that guy if it was a legal adoption."I replied "I feel like something happened to Harry. It's only a feeling."

"Why don't you owl Ron to see if Harry wrote to him?" Lucas said

I nodded my head and wrote a letter to Ron, I waited anxiously for the letter to arrive it took forever. Lucas kept my mind off by reviewing our potions homework. When we were done I opened the new potions book I bought at Hydronic alley. There was so many different types of potions that I've never thought existed.

Lucas p.o.v.

I looked at Ellie reading the potions book, her eyes lit up at every turn of the page. I felt a bit content that I could take her to Hydronic alley to get those. I turned the page of my notebook seeing the blank page that I picked up the pencil and started to draw a bit. Lately I've been taking an interest in drawing since kept taking me to those muggle museums that it looked nice. I've only started drawing the outline of the image, I carefully tried to draw the face.

"Lucas! Look at this!" I heard Ellie say, making me look up. I looked at the page that she pointed her finger at the first sentence.

"The fishtail potion?" I said "The drinker's legs will transform into a mermaids tail allowing them to swim and breath underwater, the affects of this potion will only last an hour."

"If I make this then I can be a mermaid!" Ellie said excitedly her eyes glittered with happiness. I read over the ingredients for a minute. "You'll need some pearls, starfish, honeywater, belladonna, fish scales..and Gillyweed."

"Some of these ingredients are easy to get except for that one." I said "It's a bit pricey to get that."

"Really?" Ellie replied looking at the pictures of the girl turning into a mermaid. "I thought we can make it together..."

"We can make it together." I slowly said thinking for a moment."My mum has her own cupboard with loads of different potion ingredients in it, she has some gillyweed. I can ask her if she'll let us use some of the stuff in her cupboard."

Her green eyes lit up again and smiled, with a nod I went to ask my mum. Apparently mum gave me the okay since she's in the house to make the potion as long as we're careful and hopefully not blow anything up. As soon as I told Ellie about it she grabbed my hand and went to the cupboard that's in the hallway.

"It's behind this door."I said opening it seeing a very moderate space full of different ingredients and a ladder since the jars and boxes were stored up very high. I climbed up the ladder while Ellie held it and read every ingredient that we'll need. I gathered everything in a empty box and went to my room.

"I can't wait! This is gonna be so much fun!" Ellie cheerfully said, she opened the book. "First we'll need to add three pearls in the mortar to crush them into a powder, then add one starfish and crush it mixing it with the powdered pearl. "

"Okay."I said

"Add about half a cup of honey water in the cauldron and let it stew with the fish scales. Chop three pieces gillyweed and a sprig of belladonna until it's a fine paste and add it in the cauldron letting it stew for half an hour adding another half cup of honey water ." Ellie said reading over the book at the same time adding the ingredients in the cauldron while I crushed the pearls and starfish.

After we worked together in adding all of the ingredients we waited about an hour letting it stew.

"It's says after about seventy five minutes it should have a prismatic appeal to it while the smoke should be a shimmering cloud."Ellie said

"We've still got fifteen minutes left." I said

"You think it will work?" Ellie asked. "What if we did it wrong? What if-"

"Ellie, don't doubt yourself if it doesn't work we'll try again."I said trying to be positive. "Not everyone gets it right the first time but I think as long as we followed the potion recipe we should be okay."

"I just can't believe we're making it!"she said "I've always wished I could be a mermaid.."

"Well technically you are one.."I bluntly said she turned her head towards me questioningly.

"What do you mean?" She asked

"Well..."I started thinking very slowly. "You live near the water, you love to swim, you dive in the water to look for seashells and having a few lucky finds. Your dad calls you his little mermaid , Heck you've got the movie on VHS and the storybooks and-"

"Okay!Okay!"she giggled a very light blush appeared on her cheeks."I didn't realized it until you said it."

I chuckled she sometimes can be a little oblivious to those things. "It's just a thought though."I said

"But I guess it's true."Ellie joked "All I need now is a fishtail and a amazing voice to sing."

Before I could say anything else I looked at the cauldron changing color, I pointed at it and Ellie swiftly went to take a peek at the inside. I heard her squeal in delight.

"The color changed! It's prismatic!" She eagerly said we saw the shimmering smoke. "It's done! Just like in the book!"

I nodded then we bottled the potion in a few small bottles. "Each batch we make gives about four small bottles." I said

"Lets test it out! Can we test them out?!" She said excitedly holding the potion.

After telling my mum that we finished the potion I asked her if it was alright to go test it out. At first my mum said no but after practically begging her to let us test it out, she took us to a very secluded area we had to test it out in a cave that was off limits to locals and tourist.

"Just be very careful." My mum said "I'll be here if anything happens, besides I need to look for more potion ingredients in this cave has a few that I'm looking for."

We both nodded our heads, my mum started to walk deeper in the cave while Ellie gave me her bag to hold, seeing her kick off her shoes pressing her feet in the water.

Ellie's p.o.v.

I can't believe we made the potion! This is one of the things to cross of my bucket list! I mean what girl doesn't want to be a mermaid? I held the bottle in my hands, I gave my bag to Lucas as well as placing my shoes at the large rock. I opened the bottle glancing at Lucas.

"Bottoms up!" I said drinking the bottle. I put my feet in the water and started to feel a weird sensation as if I was getting a lot of goosebumps. I felt my legs go numb for a second I then felt that I couldn't breath.

"Lucas!" I gasped and started to panic but I had a sudden urge to go in the water so I just dove in the water.

Lucas p.o.v.

I panicked seeing her jump in the water like that.

"Ellie?!" I said dropping the bag going to the edge of the water, I didn't see her I felt my heart drop. "Ellie?! Where are you?!"Did we do the potion wrong?! We did it together..."No...no...I just...no.."

There wasn't a sign I was about to call for my mum to help but something stopped me, I heard splashing sounds.

"It worked! The potion worked!" Ellie grinned

"Thank Merlin you're okay." I said "You almost gave me a heart attack."

"Hey, you're not the one that drank the potion." Ellie replied "it took a while for me to swim with this tail."

Ellie swam closer and I couldn't believe it her legs transformed into a real mermaids tail. The color was the same as the clothes she wore the tail had a dark navy color with a few shades of light blue and specks of purple shimmering. I just stared at the tail in awe.

"Want to touch it?" Ellie asked grinning moving her tail up. I reached down and dipped my hand in the cold water feeling the tail.

"It feels slimy...but at the same time it's kinda...nice." I said

"I know right?" Ellie said smiling. "I can cross that off my bucket list."She smiled at me. I didn't know why but I felt something weird in my stomach for a minute a warm feeling...it felt nice. "Lucas Now that we know that it works, I'll go look for seashells underwater I'll be back in a bit."

"Be careful, you can't be caught if any muggles see you." I warned her.

After she left I sat at the rock and took out my notebook and started to draw. Seeing her like that got me inspired, I drew what I saw and felt everything. I had a rough sketch of her as the mermaid. Two minutes before the hours up I looked at the water waiting if Ellie will be here in time. In the surface I saw a hand up and a lot of red hair.

"I'm back!" Ellie exclaimed

I smiled and helped her get back on the shore, her tail disappeared and was back to normal. She told me everything that happened when she left. Which was almost the same routine she always does but she manage to get some more seashells in different colors that I haven't seen before. Once she dried off we went with my mum helping her search for any potion ingredients in the cave. The sun was setting that it was time to go home.

Ellie's p.o.v.

It was so much fun! I couldn't believe it worked! And on our first try at making it! It felt amazing having a tail! I talked with Lucas a bit more until I heard a owl sounds, I glanced at the window and smiled. It's Ron's owl! I ran to the window and I got his letter I opened it and read it.

"Ron said he hasn't had any letters from Harry, and..." I stopped my eyes widen a bit. "Harry got in trouble for using magic in the house full of Muggles, they gave him a warning. Ron's dad said that if Harry doesn't reply to the next owl that tomorrow is when Ron's parents will go and see if he's okay."

"If...you'd like me and my mum could take you to Ron's house so that you'll go with them." Lucas chimed in. "And we could go to the concert together, it's in a few days."

I smiled of course I wouldn't forget about his present! It's perfect!

"I'll ask my dad and we'll go see Ron, then go see Harry!" I said

After talking to Lucas and his mother of when we'll get there, I went home and saw my dad at the dinner table reading a book.

"Daddy, is it okay if I stay at Ron's house for a week?" I asked walking in the room.

"Did he talk to his parents about it?" He asked

"Yes, he did. His parents are okay with it." I said

Dad looked at me while pausing a bit for his answer. "If his parents are okay with it and as long as you call me everyday then I guess you can stay only for a week." He said "Since the concert is in a few days, just be careful and stay out of trouble."

"Thanks daddy!" I said smiling. I ran upstairs packing my bag, I decided to go there tonight dad seemed okay with it. So I went back to Lucas's house with my dad.

"Be sure to take care of her Katherine." My dad said to Lucas's mom.

"Don't worry I'll keep a close eye on her until I see her in her friends house, I'm sure Molly will love having her there." Katherine said reassuringly.

"Ellie, be careful and don't do anything dangerous. I know magic can be a wonderful thing to have but you have to be very careful." My dad warned me.

I nodded my head. "I'll try to be really careful daddy." I said

That's the end of this chapter, so Ellie got to be a mermaid! Any comments or ideas feel free to Pm me! So please leave a review and tell me what you guys think.