Hiya
What sort does she currently have?
I hear barjo is quite good. It is ages since I used a cage so cant even remember what I had, but they are supposed to be quite good. They have a website:
http://www.barjo.co.uk/Someone may come along with a better suggestion but its worth a look. Crufts have lots each year..but it is probably a bit long to wait.
good luck!