I think the ironic thing about GamerGate attacking Rapp over her essay, is that she was very anti censorship in it. She claimed that censoring those kinds of materials has no effect on attacks on children, which was later construed into her supporting pedophiles. She was against Western laws because she saw them ineffective, and unneeded in Japan. Also, Rapp had nothing to do with localization changes in the games that people were upset with. She doesn't even speak Japanese.
She was probably fired on paper for her modeling job, but in reality in was probably a mixture of the GG harassment, and for being somewhat unstable as a PR representative. She also talked a lot about herself on Twitter. After all, it's not like she hid her modeling job at all.