Please Save our Cat.. 🙏😭

Mimi loves our family and my girls went out of city for vacations for a week, and Mimi missed their presence today but I don't know how to cheer it up.
My girls play with them all day but now this cat just sit and sleep and maon all the time, it won't eat well. I'm worried about its health, what can I do to cheer this cat up a little.