Hi Sarah:
I was 75 when they found my stage 3b Nsclc by accident as part of a health exam for an extended Thai visa.
Because Covid was rampant in my part of Pennsylvania, I could not return to the USA for treatment. And so I had surgery and chemo in Thailand.
My tumor was clear of other organs and blood vessels so they never told me I couldn’t have surgery. and in Thailand, they don’t have the use of pretreatments as we do in the USA.
I agree with the other postings and you should find help for your mom at a certified lung cancer center which usually will be at a University Hospital. There is one easily found on google.
Your mom’s situation is very complex and I hope you can find assistance.