let's be clear on what we think about this, to avoid confusion:
I'm sure we an all agree that an unattractive woman in her 50s would not have generated this response or money for the exact same kickstarter project. that's probably not an argument.
also the funding she received probably proves something about sexism, but not in the way she intended. lots of men are dumb and will give you money if you're attractive and young. it shouldn't be surprising then that an industry that targets this demographic would make female characters who are attractive and young.
whether she could've generated this response with anything, I dunno. there's probably a lot of other subjects that would've netted her similar results though. stuff that grabs the attention of the same kinds of people most likely.
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http://www.youtube.com/watch?v=npHDxSvwCE0