Thats part of the problem i got a substantial amount of money for my birthday and i went in my room earlier and the draw that i kep it in was open and some money was missing. Ive been adamnt for a while that my sister has been robbing money off me so i went in her room to see how much she had after claming she had no money on saturday. and in her room i find £40 in £20 pound notes which is weird beacause the only source of income for her is my grandma who gives her £10 a week on a friday.
Call the cops.