(Y/n's P.O.V)
Sirius and I have been dating each other in secret for two years. I'm a Slytherin, and I have bullied Lupin since I found out about his condition, so Sirius never told them today we are meeting his friends in the room of requirements. He is currently inside talking to them while I try to calm down.
"Come on!!" Sirius said, poking his head out and tangling his fingers with mine as we entered.
The minute his friends saw me, they went quiet.
"Y/L? Your dating Y/n Y/L? Are you insane?" All three boys started yelling.
My heart started to race. This can't be good. I began to freak out. I backed up to the wall, and my back slid down it as memorise filled my mind. My Dad yelled at me and then beat me over and over again as I grew up.
"Shut up!!" Sirius yelled at them before running over to me.
"What's wrong with her?" James asked.
"She has PTS, doesn't she?" Lupin asked, and Sirius just nodded. (PTS is a form of PTSD, just not a disorder.)
"PTS? What's PTS?" Peter asked.
"Post Traumatic Stress. Something in her past traumatized her to make it so something triggers those memories, putting her in complete freakout mode as if it was still happening." Lupin explained.
"Y/n, don't worry. You are at Hogwarts. You're with me; I'm right here." I slowly calmed down and hugged Sirius as the memorise slowly stopped. "Y/n's PTS is triggered by yelling because her Dad yells at her and then beats her."
"I'm so sorry, Y/n, we didn't know." Lupin apologized.
"It's fine. You didn't know, and you didn't mean it." I said as Sirius helped me up.