I would certainly take a taxi tour, if not possible to go with the ship tour. Tell her not to be fearful of this. An arranged taxi tour will take her at least till Acropolis Hill feet. Other destinations too, accessible by car can be added, like the 1896 Olympic Panathinaikon Stadium, perhaps some of Plaka etc.
During recent Athens Olympics a small open air elevator has been installed in Acropolis to help people with severe disabilities to reach this great monument.
You can take an idea about this improvement at:
www.sath.org/index.html…
Accessing Acropolis is a 3 parts walk but a taxi can get her without any special permission near the tickets plateau. Elevators is a sensible walk from there.
As about Acropolis elevator, she is advised to make a phone arrangement prior day at +30 210 32 14 172 which is Acropolis museum phone number, while her visit will be a lot easier early at the day during 08:00 - 10:00 am.
Upon the phone request she may be asked, due to typical reasons, about her medical situation. Some simple words as: " i cannot walk and i use a walker" are enough :).
Taxi tours:
I usually don't advice on a taxi tour, since for most people, taking the subway and walk around is the best and most enjoyable choice ( no to mention the cost ). But this is a special request. So, these are all the links i know about taxi drivers here in Athens that would make a driving tour:
Don't hesitate to e-mail them for this special request.
http://www.athensguide.com/taxi.html
http://www.greektaxi.gr/
www.greecetaxi.gr/index/greek%20tours.html
www.athenstaxi.net/athens/athens_sounion.htm
Hope these help. Here for anything adittional :)
