My sister eats ALL my food!?

Ok sorry about this little rant but SERIOUSLY my older sister does eat a majority of my food. It's not like I am trying to be a pig and hog it all but I have the gluten allergy! It's not like GF stuff taste better than the wheat stuff! WHAT IS HER PROBLEM??????????? SHE EATS EVERYTHING LITERALLY! I just got some new donuts like a week ago and whaddya know some are missing.... hmm lemme guess. This is HARD not only eating GF but trying to get fat @sses not to eat you're stuff!!! URGH!! I'm sorry but thank you for listening to me complain PLEASE PLEASE respond!