Mother in law

How to deal with MIL na nangunguha ng groceries sa ref? Nakabukod kami a few blocks away from my parents in law and sometimes she visits the house unannounced tapos mangunguha ng mga frozen meat sa ref namin 😥😭 I pay the groceries akala siguro anak nya yung nagbabayad. #firsttimemom #advicepls #firstbaby