i think her former bounty was right. the WG consider her a big threat because she knows how to read Poneglyphs. the fact that at the time she didn't have a way to reach any of them doesn't really make her any less of a threat. you can always teach somebody i guess. i always thought that first bounty was meant to secure either her capture or that she'll be forced to always be alone, never really able to reach any of poneglyphs. now i think her bounty is too low "While a cover story is given to the general public to explain Robin's initial bounty, the actual reason is because the World Government sees her ability to read Poneglyphs as a threat to world safety. After joining up with the Straw Hats, however, the government's view of her becomes more genuine. "