I am naked...

"Sarah, are you in there?" the man knocked inside the bathroom, trying to hear any noise from inside it. There was no reply from behind the door and Evlin slowly opened the door and looked inside only to see a vacant bathroom. "Strange!"

The boy yet again walked up to her stuff and picked up her phone. "Three missed calls from her mother. One of them is just two minutes ago, which means she still has not reached home. I think I should text her mother, to make her stop worrying." 

The boy quickly opened her wechat and started tying a message to her mother.

'Mum, I shall be late tonight and might have to directly go to the library. I shall see you early in the morning.' He quickly typed the send button and instantly a reply flashed on the screen.

'Alright my sweetie. You had got me worried. I have taken my medicines, so take your time. Bye.'