@siobhanmcv, welcome to Connect. It must be confusing to receive opposing view points. You are wise to carefully consider your options given the travel, expense and consequences to your family.

I might suggest that you can contact Mayo Clinic, share your medical records and see what options may be available before traveling or incurring costs. Here is the contact information: https://www.mayoclinic.org/appointments
Mayo Clinic offers appointments within 48 hours through the the Brain Tumor 48-access program. Experts at the Mayo Clinic can help you navigate your treatment options and answer your questions.

I can't imagine singing and performing with such pressure in your head due to scar tissue. Are you still working?