Mum might have cancer again

Hi. We’ve just been informed that it looks like my mum has kidney cancer and possibly Lung cancer. She is 73 and has had lung cancer before. We don’t have a plan yet but I guess that depends on whether the cancers are connected or individual. She has been referred to an oncologist so we’re just waiting for the appointment. If any one has been through anything similar or has any advice I would appreciate it. Feeling very anxious.