Can an ALF take my Mom's LINK card when they are already getting funded by the state with her SS check?

My mother qualified for Medicaid and the state sent her a LINK card for groceries. She has no need for the groceries since she stays at the assisted living place. However, the facility asked for this LINK card stating that this would also go to help pay for her meals. This bit of information was never given to me in the beginning of applying for Medicaid for my mother. Is this common for facilities to do this in Illinois?