how difficult is it to respect someone's space?

everyone knows I hate when people come into my room when i'm not there.
but asking me to come in and grab something would not have been a problem.

my sister came into my room without my knowing, took my phone charger with my knowing, and then proceeded to leave it at my grandfather's house.

so now, i have no phone charger, meaning no alarm clock for school...

and this shit always happens. people in this house do not know how to respect people's space, and property. she takes my clothes without asking, takes my jewelry, and everything. and the worst part about it is she doesn't take care of it! she leaves the things i should get back all over the place, and loses them all the time.

grow the fuck up, and stop taking things from your little sister.