if she likes her Golf, test drive a new one

can one Rent a new-ish car for a day/week - one that you're interested in?
[why buy Before you have it a few days, if you don't have to]

and the older we get, Visibility may be more and more important;
being able to see around you; mirrors etc;
and ease of getting in and out, as someone mentioned

my mother [85] got locked into a 3 year lease,
and a few weeks later decided she didn't like it!
[rent one if possible]

marc