The One Who was Meant to Be (First book)

(I do plan on writing the whole series. This is over the Scorers stone)
Hello, my name is Eloise "Ellie" Austen. I am 10 years old. Nearly 11 years old now. From a very young age I lived with the Austen's. Who aren't my actual parents. They are my adoptive parents. My birth parents died on Halloween of 1981. Yea, I know. They died on Halloween. Scary. No, not really. It was a car crash. Which is where I got this lightning shaped scar that's on the side of me neck.
"Hello, my name is Eloise. But you can call me Ellie." the girl says.
"Ummm.. Hi. My name is Harry." I answer back. Why does her name sound so familiar? Maybe I've heard it from Dudley.
He said he lived with his aunt and uncle and I live with my adoptive parents. Could we actually be related? That would give a reason why we look so much alike and why it was so easy to talk to him. Maybe Harry and I are actually siblings? Maybe even twins? Oh, I can hope.
This trip with my family was amazing. This brought me and my parents back together after everything was weird. I hope it stays this was. Like it used to be. But I have a feeling something will change. Whatever happens next will stop me from seeing them for quite a while or that's at least what is feels like.
"It means you are a wizard just like your parents." My mother says before breaking down in tears. "Wait. You knew my birth parents? And never told me?" I say quietly on the verge of tears.
"Yes, but..." my mother starts.
"But we were told not to tell you until you got your Hogwarts letter" my father finishes.
'Thank you' I think but don't actually say aloud.
"Your welcome" Harry says.
"What?" I ask and stop suddenly. Though Hagrid, who is already far in front of us, keeps walking.
"You said 'thank you' so I said your welcome" Harry turns around to look at me.
"I thought it but I didn't say it out loud" I tell him.
"Gryffindor!"
"Ravenclaw"