i checked that everytime and she is used to it. She steal baby food before so there is no reason I will let her steal more. U know in hk, even big supermarket stores check their staffs' bags every night when they leave.
my maid always cook our food/rice at sat and bring to friend on Sun . when i found that , i wake up early on Sun and state in Kitchen to clean cabinet. but i think if they stole things, they can bring it on weekdays to friends , no need to do it on Sunday.