If Barbara has tried to remain as athletic as possible, or as independent as possible, she should probably have a different chair, but if she's put any sort of athletics behind her, or if she has someone pushing her for any period of time, then I think that chair works just fine.

But that's the thing, though. Barbara is extremely athletic (she's still a superhero!) and lives completely independently. She doesn't have anyone to push her around. Also, she's loaded. Whatever the most advanced currently available wheelchair technology is, you can bet that she'll be riding it.