Perplex Room Escape

I went to my native and came back too late and my school hostel got closed

so I went to my sister friend room for to spend the night.

Night itself I packed everything to go to my school and I slept nicely.

And suddenly I heard the alarm sound and it’s too late so I went to fresh up myself to get ready.

After I got ready I went to open the door but it’s locked.

Unfortunately my sister friend locked the door and went I have to reach my school on time.

Please friends help me to escape from this room.