Ms. Trump wrote to Mickael C. Damelincourt, the hotel’s typical supervisor, and requested him to simply call Mr. Gates to negotiate a superior deal for the inaugural committee. “It ought to be a truthful market price,” Ms. Trump claimed in a observe-up e mail, which soon led to a new offer you of $175,000 for each working day.

Still Ms. Wolkoff elevated problems.

“In my opinion, the max rental cost ought to be $85,000 for each working day,” she responded to Mr. Gates and Ms. Trump in an electronic mail wherever she also pointed out that other qualities, this kind of as Union Station, had available their areas for the inauguration at no charge.

This sequence of email messages — filed in courtroom paperwork as component of the lawsuit — is at the coronary heart of the circumstance that Mr. Racine, a Democrat, is pursuing.

The inaugural committee compensated $220,000 for rooms at the hotel, which includes $75,259 to rent out the so-called Trump Townhouse, promoted as an ultraluxurious suite.

On two of the times that the inaugural committee paid out the hotel $175,000 to lease the ballroom, it experienced no functions that made use of it, the lawsuit mentioned. And on a third working day when it essentially made use of the ballroom for a luncheon — yet again spending $175,000 — a further nonprofit team had paid just $5,000 to hire the exact presidential ballroom house for an inauguration-relevant event that early morning.

The committee also paid out the resort for expenditures affiliated with a “friends and family” celebration for Eric Trump and Donald Trump Jr. that their father was not envisioned to show up at. The inauguration employees was so unpleasant sponsoring the accumulating that they experimented with to cancel it, court docket documents showed. But Mr. Damelincourt objected.

“Rick … just read that the Friday evening reception experienced been canceled. Is it precise?” Mr. Damelincourt wrote. “Tough on us if it is as it was a large amount of earnings.” The event was then rescheduled and took area the night time Mr. Trump was sworn in.