So $159k - $16k (kickstarter cut) - 738 sticker packs ($2k?) - 216 postcards ($0.2k?) - 51 DVDs ($0.2k?) - production ($6k?)

That's still $135k

Seems like a pretty decent chunk of change (especially considering that she's still taking donations on http://www.feministfrequency.com/ and getting paid for speaking - both hinging on her continued relevance in the media)

I also think you're forgetting that she can simply change identities online if she wishes (anonymity protects the good guys too!).

Anonymous death threats made against celebrities aren't new (twitter is just a new, highly public, medium). No one can say with certainty she's not in physical danger, but no one can say with certainty she's not going to be struck by lightning either.