how did your wife prepare for the test, did she just read the book or did she use any online tests or buy a

online tests
http://www.theuktest.com/

for android - i've no ideas if this is a any good.
https://play.google.com/store/apps/d...ifeintheuktest

for the pc test questions
http://www.ebay.co.uk/sch/i.html?_od...st+pc&_sacat=0

practise, practise and practise and good luck next time