Writing lesson- start to a story

The Greyon Boarding school 

I know something that nobody else knows. It started a month ago, the day we arrived here. No, actually it started a month and 5 days ago when I first got the letter inviting me to The Geryon Boarding School for young and gifted girls. There was a letter delivered to the orphanage with my name on it, Spencer Hunt. It read that they were giving orphaned children a chance at a good education, because of that they were inviting me to spend the last 6 months of year eleven there with some of the best tutors in the country, id never heard of the school before, but I couldn’t turn down the opportunity. 5 days later I was there. When I arrived through the loud creaky gates there was fourteen other girls arriving and the resemblance between us all was uncanny, we were all blonde with brown eyes, and we later found out that we were the only students in the school. They wanted to focus on a small group. We’d been there two weeks when we got told one morning that our friend Allie had left the night prior, they said she wanted to go home which made sense,  Allie was a nervous girl. But it was surprising when a week later we were told Nina, had also left, she seemed to like it here. But the thing that really shocked me, that I need your help figuring out, is when they told us this morning that my good friend Malia left in the night because she preferred her life before, in her orphanage. But I knew that wasn’t true, she liked it here.  last night I couldn’t sleep I was up ALL-night reading, my room is at the front of the building I would’ve heard if the gates opened, but they didn’t, nobody came in our out of them gates. So where is Malia, and what are we really doing here?