Queen Camilla gave a brief update to royal fans and the inquiry press about the health status of her husband King Charles... And a slight, oh-so subtle warning was seemingly directed at the monarch.

While attending a garden party at Lamb House in Rye, England, on 5/16, the Queen told a guest in attendance that her 75-year-old husband was "getting better," reports Roya Nikkhah, the Royal editor of The Sunday Times.

However, the Queen offered some caveats.

"Well, he would do so if he behaved himself," she added.

Queen Camilla did not expand on her short comments. Since King Charles announced he had been diagnosed with an undisclosed type of cancer earlier this year, members of the Royal Family and monarch officials have claimed they are "frustrated" by the royal duty they face publicly while the monarch continues to treat them.

"He is constantly urging his staff and everyone, and his doctors and nurses, to be able to say, "Can we actually do this?"Peter Phillips, the king's nephew, told Sky News Australia's The Royal Report on May 3, adding that his uncle "is frustrated that he can't do everything he wants to do."

"So the top priority message is that he is obviously very keen to return to the form of normality," Phillips added at the time.

In addition, that same month, a source told people, "It is (the king's) appetite for work that has not completely waned.

Wang returned to public duties at 4.30 am, including a visit to a cancer treatment center to meet with medical professionals and patients. Recently, the Palace released an update on the king's health, writing in a statement that the monarch's "treatment program will continue" and "doctors are fully satisfied with the progress made so far.""

"Future contracts will be adapted as necessary to minimize the risk to His Majesty's continued recovery," the Palace statement continued, In addition to confirming that Wang was "greatly encouraged" to resume his duties facing the public, he is "very grateful" to his medical team for their "continued care and expertise.""

The King is known to be a kind of "workaholic,""probably became all the more obvious when the king chose not to meet with his son Prince Harry earlier this month due to his busy schedule

Sources close to the Royal family said that Charles was a "good patient" but that he was a "good patient." She told the royal author Katie Nicol for Vanity Fair that it was something that was "not very patient."

"He is doing well, but most of all he is frustrated that he had to take a day off," the source added.