Mary Trump on Sunday delivered yet another blistering critique of her uncle, Donald Trump, slamming him as “unhinged and incoherent” and a “frightened, desperate man” who is “dementing.”

The former president and current GOP nominee is “demonstrably untethered from reality” and Americans “deserve to be told that there’s a maniac on the loose,” the clinical psychologist wrote in the latest issue of her email newsletter, “The Good In Us.”

Donald Trump’s nonsensical response to a question about childcare legislation at last week’s Economic Club of New York was proof, she suggested.

“I defy anybody who was actually trying to follow the thread of that gibberish to tell me what it means. Nobody can,” Mary Trump wrote, later summing up her uncle’s comments as “disjointed riffing coupled with his greatest hits and catch phrases.”

Trump’s niece also reserved scorn for some “corporate media” organizations, who she accused of translating her uncle’s ramblings “into a version of the English language we can all understand” which sometimes gives them “meaning that is not there.”

Read Mary Trump’s full analysis here.