She marked Mother's Day and Memorial Day, expressed sympathy to victims of the Santa Fe shooting, and offered thanks to Britt Slabinski, a former navy seal, after he was presented with the Medal of Honor at the White House.
I see the media is working overtime speculating where I am & what I'm doing.
Melania hasn't been seen in public for almost three weeks, with outlets such as CNN, ABC News, and Vogue running stories about her 20-day absence.
Her absence led some to speculate and draft conspiracy theories about the first lady.
Some needed more convincing than a mere tweet.
The first lady has not made any public appearance since she accompanied President Trump on May 10 to welcome home three men who were previously held captive by North Korea. It was dark but she looked fine, dressed in a tailored pantsuit with cropped trousers.
On May 7, Trump launched her "Be Best" campaign, which aims to address societal issues children face today.
Meanwhile, the mocking, spoofing and mean-tweeting (aimed at POTUS mostly) on Twitter poured out. Some doctors familiar with the procedure but not involved in her care said people treated with embolization typically are sent home the same day or the next.
President Donald Trump arrives with Department of Health and Human Services Secretary Alex Azar, left, and chief of staff John Kelly, for the White House Sports and Fitness Day on the South Lawn of the White House, Wednesday, May 30, 2018, in Washington.
"She's doing really well", communications director Stephanie Grisham tells ABC News in a statement. "Just looking at us, right there".
But when reporters turned to look at the window he indicated, there was no sign of the first lady.
That episode was an invitation to meme-making on Twitter.
The first lady's tweet was an attempt to tamp down rumors about her whereabouts since her last public appearance, back on on May 10.
Interested in Melania Trump? After all, before her surprise - to the public, at least - medical procedure, they had seen quite a good deal of the first lady, who is often described as intensely private.
"So. has the WH lost track of another immigrant?"
Others said there was legitimate reason to wonder about Trump's health.
Melania also tweeted Monday afternoon that she is feeling great, while sniping at reports about her absence. Since then she's been mocked for her clothes and her shoes and criticized for a donation of Dr. Seuss books.
On Twitter, some suggested her husband had actually written the tweet that appeared on her account on Wednesday.
Still, conspiracy theorists abound.