to see if the ticket page is listed there. In Internet Explorer 8 click on 'Favourites and select the 'history' tab. With luck a copy of the page will be stored there.
Ticket pages will have unique urls that are created dynamically, and you may just see a blank page. If that's the case you'll need to contact the coach company. If your wife is travelling from a coach station they'll arrange for the ticket to be at the office for her to collect when she goes to travel.