I don't exactly follow what people would call the mainstream media closely, but what I was exposed to mentioned all of these things (or at least the fact that she was accused of them), while their coverage of Trump that I saw consisted solely of unedited airing of him speaking.

I sincerely don't understand the claims that the coverage was biased against Trump. If anything, it seemed to me that they were personally against him but in response to that they overcompensated and skewed the coverage too far in his direction.