Get her mobile! If she's young enough to travel (walking, wheelchair, whatever) she's young enough for orientation and mobility lessons. These are quite essential!
Get her reading! Braille is not the only option. As someone mentioned, moon works. The RNIB/NLB library service has a small but interesting selection of grade one moon books. Learning moon requires very little time and much less tactile discrimination- making it great for elderly people.
Audio books are also excellent and can be purchased or, sometimes, checked out from a local library or your national library serving the blind. The selection for audio books, in general, greatly exceeds what one might find in braille, and hands down is a million times better than what you'll find in moon.
Treat her like any friend you might have who is down and depressed- take her out for a film she'd like, go to the bookstore together (one with audio books), walk around in the mall, go to a museum (especially touch-friendly ones! The art institute, for example, has a touch-friendly exhibit and audio-based descriptions of the art in every room using a small hand-held device)... basically, get around- it's the best 'cure' for feeling down.