Had she failed to take the steps impugning the veracity of the complaintant, challenging the provenance of the forensic data (I thought it had been entirely cut away and gone missing?), she would be liable to criticism.
One caveat: there are vague allegations that Hillary presented her own affidavit which contains false or at least unsubstantiated allegations. If so she would be subject to discipline and even disbarment. But we don't know whether there was any factual basis for this affidavit, apparently the underlying records have been lost. We are reduced to speculation.
We are in a very dangerous place when a lawyer is judged by the character of her clients. I refer again Abraham Lincoln. She did not seek this client out. She did seek out the Black Panthers and she did cross the line in the impeachment of Richard Nixon.
If the argument is being made that Hillary has somehow transgressed a feminist taboo in her representation of this client, that is an argument of political hypocrisy but does not go to her professional ethics.
Are you a lawyer?