i would have thought she could extend it
http://www.ukba.homeoffice.gov.uk/wo...ers/extending/
possible problem with only being a 6 month visa to start with but should be ok to extend another year . but give the UKBA helpline a call and check she is eligable to apply on 0870 606 7766
have you lived together ?
if not she could try extending every year and after 5 yrs apply for settlement,
are you british ?
