Find another TMO store while you're at it
Depending on how much she wants to use Office-type docs....a pocketpc can handle them pretty well, almost as well as a desktop if you are willing to pony up some dough for SoftMaker programs.
She needs to determine exactly how she is going to use it for these docs...is it worth a PPC smartphone? (which have quirks) or maybe a separate PDA and phone?