a plea for help

I need help! See, my grandmother's birthday is coming up (actually, it's today, but I won't see her until next Monday) and I'm trekking out to the bookstore to get her present tonight and I'm looking for recommendations. She was always a big reader, but ever since my grandfather died she hasn't really been able to get into anything and she's been going on and on lately about how she misses really looking forward to reading a book and I'd love to get her a few books that would help her do that. I've got a few ideas myself, but if anyone out there has any ideas, I would SO appreciate it. There are a few qualifications, which is what's making the book search so challenging:

(1) I have to give it to my grandmother so, you know. I would feel weird giving her a book of erotica or something.

(2) It can't be too sad. The books she's read since my grandfather's death have all been sad and part of what's turned her off reading ( I still can't figure out what whoever recommended The Lovely Bones to her mere weeks after the funeral was thinking.). So, happy books. Funny books. Uplifting books.

Any help would be greatly appreciated. Nana needs a good read! Rally to the cause! I mean, if you want to. No pressure.

And now I must go back to work.