What will you do?

Hi mummies what will you do if you were me? In my mother group chat I realise there this mummy always asking for blessing of stuff claiming she's a blue Chas card holder young single mum and often the stuff she request usually is certain product eg. I need a carrier I prefer xxxx brand. And one day I saw her social media appearing in suggestions. I saw she has a lavish lifestyle posting instead of what she claim as she is a needy mother. She goes to fine dining quite often. I feel that she's cheating all of us if you were me will you expose her?