Content Warning: This section of the guide discusses alcohol addiction and emotional neglect, as well as sociopathy, narcissism, and other personality disorders.

Mary L. Trump is the author of Too Much and Never Enough. She is the daughter of Fred Trump Jr. (Freddy) and Linda Clapp Trump, the granddaughter of Fred Trump Sr. and Mary Anne Trump, and the only niece of former President Donald Trump. She received a PhD from the Derner Institute of Advanced Psychological Studies and has taught graduate courses in trauma, psychopathology, and developmental psychology.

Much of her work is an assessment of the psychological issues that her uncle, Donald, has exhibited during his life and especially during his presidency, which she connects to Donald’s upbringing by parents who were emotionally unavailable. Additionally, her work focuses in large part on the life and death of her father and how he was treated by his father, Fred Trump Sr.

Before publishing her book, she played a key role in providing documents to assist with a New York Times story in 2018 centered on the Trump family’s business dealings, some of which were potentially fraudulent.