In particular -- if she's going to level tacit, but just the same highly public and career-damaging accusations of sexual harassment or other misconduct against other GitHub employees -- which, going by the language of her recent j'accuse tweet ("Don't do business with ...") would pretty much have to be what she's implying (even though she won't say it directly)[1,2] -- then she had better be prepared to back up what she's saying with reality-based specifics.
Being as, going by her "uneven", to say the least, track record on veracity thus far, we just don't have much reason to give her the benefit of the doubt.
[1] https://twitter.com/nrrrdcore/status/459358875213238272 [2] also http://techcrunch.com/2014/04/24/horvath-names-names/, since deleted.