I believe Vision Associates in Northampton has the machine. I do not know about the insurance part.

Flying used to be super expensive and in their 20-30's as women (1960's they would have been expected to do the things society expected them to be doing at that age. So unless super wealthy you were not living that life. Many countries were not open for such travel anyways. Being a "jet/country hopping nomad" is a recent thing in terms of social acceptance and availability of resources for the average person to do such trips. At 81 you aint got the time to waste trying to learn a new language and absorbing culture of the locals and daydreaming of what life could be. You have already outlived your peers and got nobody to impress...