How should I ask for my books back?

My sister borrowed two of my healthy books. Doubt she has even read them maybe just went through them it bothers me that she has them because I paid for those books. I take care good care of them so now I just want them back. I saw that she had them stored in her kitchen pantry along with other books it kinda bothered me. Anyways I just want them back for peace of mind, how should I ask for them back? "Hey could you bring me the books you borrowed, I am starting to eat healthy again" how does that sound?

How should I ask for my books back?
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