Tim, I was looking at the beautiful houses not the rose!
Similar question on the gardener's world roadshow last night as Doris said. The answer stuck in my mind because I was surpirsed at the time the lady was told to prune: September to November.
Presuming your daughter wants multi stemmed rose with blooms not just at the top?
The advice was firstly, and of no use now, always cut back a climbing/rambling rose to base when planted to ensure multi stemmed growth.
That apart, the advice given was to be brave and cut to just above where the rose stem first branches, thus encouraging new growth. Each year thereafter cut one stem back as far as possible and after a few years you will have new fresh growth to replace all the old. Oh, and tie in horizontally. Hope this makes sense. Let us know what you decide.
:)