A dialect of Alemannish is widely spoken. English may also be spoken. POST 3 - 4 days. Women are unlikely to encounter many problems while travelling in Liechtenstein. The best rail access is via the Swiss border stations at Buchs or Sargans or Feldkirch.
Local buses operate between the local villages.
A national driving licence is sufficient. Your Passport to Safer Travel gives practical tips and advice for travelling independently around the world - safely.