She underwent surgery at Walter Reed hospital on May 14 for what aides called a "benign" kidney condition and was released on May 19. Last year, the first lady and her husband traveled to Puerto Rico to visit families affected by hurricanes, serving them food and visiting relief centers.
Trump earlier said the 48-year-old Slovenia-born former model was "doing really well!"
On her show "Deadline: White House", Wallace lit into Trump for his tweets about First Lady Melania Trump's prolonged public absence and the subsequent media speculation about her whereabouts.
Even after Melania was spotted during her first public appearance at a Gold Star event in the White House, where the press was absent, many social media users wondered if it was the real first lady that attended the ceremony or her body double.
Melania Trump, who attended her first event in 24 days Monday when she appeared at a private East Room event for Gold Star families, has made a decision to skip the "Celebration of America", Stephanie Grisham, her communication director said Tuesday, the Hill reported. She's done a fantastic job as First Lady. Her absence launched a wave of guesses in the mainstream and social media, where all sorts of theories were suggested. But, if she wanted to really make a big change - and to do it quietly - falling off the face of the Earth isn't the best way to go about it.
Grisham told ABC News last Wednesday that the first lady was "doing really well".