AN: Started to figure out how this site works so hopefully that will make it easier. Any mistakes you notice and point out will be appreciated.
It's a weird feeling going from socially inept to suddenly an expert on reading social cues and knowing the exact thing to say. For example, the very originally named Rose Potter is, from what I can tell, a mix of anger, sadness, and longing. I doubt that growing up in the with the Potters she was ever told that she had a brother. I would guess that she was hopeful when first told about me, as what little knowledge I had about the family from my shopping trip pointed at them not being a bunch of attention whores but rather a closed off group that didn't interact with fans and well-wishers often. This could easily have led to Rose growing up a lonely child and suddenly finding out about a twin brother that she could bond with only for him to reject his family to stay with muggles was devastating.
If this was from before I would have thought that she was just angry at me. Damn [Communication Talent] does great work.
I'm still unsure as to why this Harry was even given up in the first place. He obviously had magic so it couldn't be that they thought him a squib, and as Rose was the actual prophesied child there was none of the wrong boy Boy-Who-Lived stuff since so what were those two even thinking. Dumbledore's fault somehow if I had to guess. When in doubt blame the century Wand sucker.
All of that to say that I am not looking at a spoiled princess who had all her wishes granted but a sheltered girl whose hope for someone to be close to was destroyed by me and she doesn't know how to feel about that. And that was something I could easily use to my advantage.
"Anger and resentment mixed with a large amount of betrayal." I say still staring her in the eyes.
"Tell me Rose, how would you feel if for fifteen years you were told that your parents were deadbeat drunks who abandoned you. That until the age of five you believed that your name was Freak. That you were made to work as a slave in all but name and being made to sleep in a cupboard under the stairs until the age of thirteen because you had grown too large." I say, never once raising my voice as i casually tell her of some of the shit Harry was made to feel deal with before I arrived. From the horror that suddenly overtook her face she had no idea about my living situation.
"B-but then why-" She started to get out before I cut her off.
"And then after dealing with a family that hates you for years, you are suddenly approached by a woman claiming to be your mother, telling you about how you are truly a wizard and have great powers and inviting you to come live with her family, to suddenly have a mother and father as well as a twin sibling. To have a family that loves you."
Even with [Stress Defense] taking the edge off most of the memories it's still difficult to not be overwhelmed by all the emotions that I inherited from Harry.
"And when for the first time in your life you can have hope that the world isn't as horrible as you thought, you suddenly have to ask 'Why, why did you abandon me?' and the only answer you get is 'Because it was what's best for your sister."
My hands start to tremble a bit, heat starting to seep into my voice.
"Because what I felt Rose, was betrayed. Betrayed by someone who called themselves my mother. Betrayed by a father I never met. Betrayed for a twin that I didn't know existed because she was somehow more important than I was!" By the end, my anger was clear as I was all but shouting.
"At least with the Dursleys I could trust that they hated me but for your parents, how could I say that they wouldn't discard me once again if they thought that it's what would be best for you." I finished, my voice sounding tired.
All the anger she held had long since vanished, replaced by large amounts of guilt, tears forming in her eyes.
"I do not blame you Rose for all of this; I doubt that you were even aware that I existed, so how could I begin to blame you for the sins of your parents."
She was openly weeping as I said this, no doubt feeling at least some relief over my lack of hate for her. Giving her a moment to pull herself together a bit, I turn to the trunk that was blocking the door
"Would you like me to help put your trunk up?" I ask her, giving her an offer that she immediately picks up on.
"I-if you wouldn't mind" was the near instant reply.
Nodding, I slowly drew the Wand I had received from Ollivander, Elder wood with a Dragon Heartstring core, sized thirteen and a half inches in length, slightly rigid. The old creep seemed delighted to have me pick the wand, mentioning something about it being the first match for Elder he had the pleasure of making.
A quick swish and flick and speaking the name of the spell I easily levitated her luggage onto the overhead rack.
Turning to look back at her I pocketed my wand and held out my hand
"I figured since this is our first meeting that we should properly introduce ourselves don't you think. Harry Potter, First Year Hogwarts student and the brother to the Girl-Who-Lived."
She takes a moment to stare at my hand before looking back at me before she blushes as she realizes she never actually introduced herself. Quickly standing and taking my hand her blush further increases at the contact.
"Rose Potter, also a First Year student at Hogwarts, and your new sister."
I simply smile at her and wait a moment before looking down.
"You can let go of my hand now you know." I tell her with a barely concealed smirk.
She quickly releases my hand with a sorry and leaps back into her seat. I barely managed to sit down before the door to the compartment slid open once again and a certain redhead walked in.
"You two mind if I sit here?" he asks, looking at the empty seats. "Everywhere else is full."