There was that girl running again. Mahlioz didn't know who she was, but she had seen her quite a few times before, from the library or while walking through corridors, looking out of the window. She had seen her many a times during the beginning of the year, even some of the end of last year, and here she was again. Always running. Like she was showing off to the world that she was so much better than Mahlioz.
Okay, Mahlioz didn't really think that, but the more they saw her running, the more it felt like it. She ran so well. For so long, and at a decent speed, too. Every single time Mahlioz watched her go by, they were reminded that they hadn't done a real sport in too long. That they hadn't ran in literal weeks, and then it had been to get to a class on time. They had always been jealous of people who did sports, especially regularly, but this girl? It almost felt personal at this point. Mahlioz had been slowly building an annoyance towards her, without even knowing her. What right did she have to go running like that all the time like it was easy? Show off.
This time, for once, Mahlioz was on the grounds when the girl was running. It was the first time she'd seen her in a while, but the annoyance was immediately back. The third year had come outside to enjoy a nice, sunny-ish day (as good as you could get in Scotland, anyway) with a book, and now this girl was ruining it making her jealous.
But it didn't stop there. The girl decided the right place to stop for a drink was quite close to the wall against which Mahlioz was sitting in the grass. And enough was enough. The Slytherin couldn't convince herself not to judge a book by its cover, because it had gotten to the point where she almost believed the personality she had made up for this girl was reality. And her ego was hurt by how well this stupid kid was running. So she let her teenageriness take over.
"Wow, you're really good at running." They had meant for it to sound sarcastic, but it ended up just sounding like a compliment. They were rather terrible at this. Why were they so freaking terrible at this?! They had to - they had to prove themselves, they couldn't let this girl just- keep being so awesome! It wasn't fair! "But there's no way you're that good at everything. Like, I bet you couldn't - I bet you can't play any instruments well at all!"
Had Mahlioz been in any better state of mind, they may have cringed so hard they would have wanted to fall into a hole in the ground. But none of it mattered right now. She needed to be better than this girl. At least she knew she was good at violin, she knew she was, she knew she would be better than the runner girl. She had to be.