A child in disguise

I can't take it out of my mind how bratty my ex's younger sister is. She's a Freshmen and she treats me like we're at the same level. I had high expectations from her since she's boys's sister and he is used to be a nice person. Plus she's a girl, but her language is above her level. She needs to watch her mouth. She's a member of our school publication and most people there are very nice, well it's true. Why would we take a trouble maker as our member? Anyway, she treats me like sh*t.

Here's what happened. She texted me asking "how many goats are in the mountain? If you're smart, then you can answer that". I told her "I don't know." Then she said "then why is your signature '#21'?" I told her it's my favorite number and the name of my favorite store is Forever 21. Then she replied with "who asked?" and I was like "the hell?" in my head. I told her "you asked, duh." Then she suddenly came after me by saying "don't you talk to me like that because you have no idea who I am and how I can be when I'm mad." I was clearly lost in the world. Reading my sent messages over and over again and thinking what'd I do wrong? So I told her "you asked me a question, I gave you the right answer politely and you're suddenly accusing me of coming at you? It's you who should be watching your mouth." After that she never replied.

Luckily my friend Lenny had my back and she was more upset than I was after I told her about my conversation with my ex's sister. The world is just crazy that night. My ex's younger sister texted me the following day saying "I asked you how many goats were in the mountain." I never replied to her, how was I supposed to know that? Plus I'm about to become a proper lady and I can no longer play those kinds of games. Then today, she message me on facebook saying "gotcha!" and I replied back with "?" and she laughed and said "brainwash?" And was like "what's wrong with this kid?" I never replied to her after that. 

The Freshmen this year have issues. I mean serious issues. They may seem innocent, nice and friendly, but they've broken rules, disgraced the name of our school twice (or maybe thrice) more the the grade levels above them. They act like they're not their age. They act like they're older. Sometimes older than us, the Seniors.