the difference is her visa has expired already andy !, but seeing its only a week, if i was her i would apply for it now, and write a short note, saying she thought her visa expired in dec not nov, and hope for the best
she should get legal advice tomoz. don't leave it any later..
was she here on a 2yr spouse visa or a fiancée visa ? was she applying for ilr ? has she passed the 'life in uk' test ?