In my opinion, there are other options apart from surgery, they should be tried and surgical options can wait till a later stage.
She needs a stage-wise diagnosis and treatment which may include CT scan or PET CT.
But with virtual platform, it's highly possible that some important detail pertaining to your mother's course of treatment could have been overlooked.
If the surgery has been performed by now and she doesn't present with severe symptoms that are difficult to handle, then things may have worked, but if her condition is critical, then we will advise you to reach out to other specialists - Oncologists In India.
If you have any other doubt, then reach out to me, clinicspots team or other specialists, also let clinicspots know if you have any location-specific requirements for finding desired specialists, take care!