By the time Mary Trump was old enough to remember anything, Donald Trump had graduated from Penn (Wharton) and was working in the management of Fred Sr.'s company. So she is basically regurgitating the "memories" of a father who was so far into being an alcoholic that he died before Mary graduated from high school, seasoned by her own bitterness over how her lawsuit contesting Fred Sr.'s will was settled.
IOW, her hatred-written novel is perfect for a place like DU which was engendered by and birthed in hatred.