The first lady joined the president at a reception to honor families of those killed during military service.
Melania Trump made her first official appearance at the White House Monday night since her hospitalization more than three weeks ago - but out of view of the press. Four days later, on May 14, White House Communications Director Stephanie Grisham announced that the first lady had been rushed into emergency surgery for a benign kidney condition.
Mrs. Trump was last seen in public on May 10.
Mrs. Trump wore a little black dress and matching Manolo Blahnik suede stilettos to the Gold Star families event at the White House.
According to one attendee, the president joked about the rumors that have circulated during his wife's long absence and teased that they aren't breaking up.
"Did she leave him?" the President asked at one point, before pointing out that Melania Trump was, in fact, sitting in the front row.More news: Trump tariffs a bully's gambit
About 40 families participated in the candlelight ceremony in which the names of the fallen were read aloud. Pike's son, Chief Petty Officer Christian Pike, of Peoria, Arizona, died in 2013 in Afghanistan.
CNBC reporter Eamon Javers tweeted last week he had seen the first lady walking with her aides in the West Wing.
Melania did attend last year's G7 summit in Italy and the G20 summit in Hamburg last July, but spent the first day of the latter gathering in her hotel suite due to violent protests. She returned to the White House on May 19.
The first lady's lack of recent viewings, prior to Monday's event, has created a storm of "where is she?" memes on the internet, and speculation on her whereabouts ran the gamut, from New York City to Palm Beach. "She has had several meetings internally with staff and will continue to do so this week". On May 22, Karen Pence, the wife of Vice President Pence, accompanied the South Korean president's wife, Kim Jung-sook, on a tour of a historic home near the White House. First lady Melania Trump also greets them at right.
"I see the media is working overtime speculating where I am & what I'm doing", she tweeted. But over the past half century, it has become the expectation that people know the basic narrative of the first lady's activities. Her prolonged absence set off a flurry of controversy in the media.
Comedian Sarah Silverman retweeted the first lady's post, adding: "Who is this? where's Melania?"