Hillary's abuse of her husband's mistresses should be mentioned, but NOT his acts. I'd like to see mention made of the Clintons' stealing furniture, etc. from the WH, the messes they & staff left, etc. But her abject abuse of law, failure to pass the D.C. bar exam, her questionable escape from indictment, her blaming Benghazi on the anti-muslim film, the list of legitimate targets going back to WhiteWater, her 1990s attempt to force feed health care on the US, her muslim staff with connections to the M.Brotherhood, -- illegitimate acts of Hilary -- is long, but should be chosen carefully.
Trump might ask how she dodged sniper bullets in Bosnia, how she rebounded from being "dead broke" when Bill left the WH. Ask about her tax returns & those of the Clinton Foundation.
Trump should ask her how she's feeling, but not overdue it. Frequent questions about her health, if carefully posed, might un-nerve that hardened, secretive female.