What would you do if you thought someone was watching everything you did? Would it frighten you or make you mad or both? Would you go looking?
Would you hide? fight? Throw things? Bite? Cry? All that?
Even with friends, you would still feel these things, no matter what they said to you. What would they say?
Would your friends stay? Would they leave? Would they call your mother and beg her to come help you? Would they tie you to a chair?
Would they WATCH YOU to be sure you don't hurt yourself?
What would happen to change things?
A short story starts out with a building up of a problem , build, build, build, then BANG something happens to resolve or change the outcome.
Is there someone REALLY watching her? Like a stalker? Is she safe? Is she hurt?
I think it would be fun to have her imagining that she is being watched and everyone thinks she is nutty. Then come to find out she IS being stalked by the most unusual person anyone could imagine-like say a crazy nun or a robot or a child who hates her. Maybe her nutty cousin or one of the friends who tried to talk her out of it.
Have fun!