Her husband complained earlier Wednesday that speculation in the press has been "so unfair, and vicious."
Trump tweeted Wednesday that during his wife's recovery, "they reported everything from near death, to facelift, to left the W.H. (and me) for N.Y. or Virginia, to abuse."
He added: "All Fake, she is doing really well!"
On Monday, the first lady strolled into a White House event Monday for military families and swept away the wild speculation that she was incapacitated or had otherwise vanished.
The White House did not allow journalists to cover the Gold Star event out of respect for the families, which meant Mrs Trump was seen in person only by the 40 or so families and administration officials who attended. Others had to keep an eye on social media.
Video posted on Twitter showed the first lady, who wore a black sleeveless dress and her trademark stilettos, strolling into the East Room accompanied by the president.
- AP