Stephanie Grisham, Donald Trump’s former press secretary, excoriated the Republican presidential nominee at the Democratic national convention on Tuesday, saying: “He has no empathy, no morals, and no fidelity to the truth.”

Grisham, a Republican operative who also served as a spokesperson to Melania Trump, offered firsthand accounts of the former president’s behavior behind closed doors.

“I wasn’t just a Trump supporter, I was a true believer, I was one of his closest advisers. The Trump family became my family,” she said, saying she spent her holidays at Trump’s Mar-a-Lago residence. “I saw him when the cameras were off … Trump mocks his supporters. He calls them basement dwellers. On a hospital visit one time when people were dying in the ICU, he was mad that the cameras were not watching him.”

Trump mocks his supporters. He calls them basement dwellers. On a hospital visit one time when people were dying in the ICU, he was mad that the cameras were not watching him.”

She continued: “He used to tell me: ‘It doesn’t matter what you say, Stephanie, say it enough and people will believe you.’”

She repeated a story she has told before: that during the January 6 insurrection, she asked Melania Trump whether she could tweet that there was “no place for lawlessness or violence”, and the first lady gave a one-word reply: “No.”