The Clinton's have been subject to the harshest public spotlight of any couple in the history of sexual relations, ever. It's already been litigated in the court of public opinion. Hillary has been through the trenches before and she's had this answer in her back pocket for the past 16 years. Probably longer when you think about the Flowers stuff.
Trying to pivot and attacking Trump for raping his wife is a beyond horrible strategy imo. You can't dignify the Broadarick line of attack with any kind response, you can't legitimize that "you enabled an abuser" line of attack under any circumstances--don't even entertain the possibility of a false equivalency. Let the tape speak for itself.
The criticism against the Clinton's is that they allowed their usual distractions to derail the highest office in the land and the country. No one is under any illusions that Trump will not do that, times a hundred. No one, other than Roger Ailes and Sean Hannity, actually finds this line of argumentation, on face, without context, without rebuttal, to even be persuasive. You can't just throw it out in a 30 sec debate soundbite without any evidence and expect people to find it convincing, in the least. Treat it the same way she treated the Blumenthal birther stuff - a non-sequitur not worthy of a response.