I have learned that Mothers like things for a lot of different, and sometimes obscure reasons...
If the only reason she wanted the Bose was based on reputation, fishing for other options would be easy. However, she probably liked the display, remote, or something she didn't even realize... It may fit perfectly for somewhere she had in mind... Whatever it is, it's usually something we wouldn't have considered.

I would suggest a JVC UX-G70 or some kind of micro-system for her... However, the Bose is much easier to operate. The Tivoli mentioned above looks good but I haven't used one. The buttons looks small and the print is very small around them.
My sister and I bought my parents a $59 Magnavox cd/fm/am/tape boombox and they have been pleased with it for almost 10 years. It has big buttons and is very easy to use. My Mom is now attached to it, my Dad can't hear well enough to care. Audio is so far down on most parent's (and people in general's) list that you shouldn't get too excited about the 'audio appliance' you buy them. They'll appreciate it a little more than a new vacuum, but not much.

If you're looking for a youngster, that changes things but for 50 and up, audio schmaudio.
-C