The British monarchy wrestled on Tuesday to formulate a response to Meghan Markle and Prince Harry who accused a family member of making a racist remark about their son and courtiers of ignoring her pleas for help when she was suicidal.

Meghan and Harry’s tell-all TV interview to Oprah Winfrey has dragged the royals into their biggest crisis since the death of Harry’s mother Diana in 1997, when the family, led by Queen Elizabeth, was widely criticized for being too slow to respond.

In the 2-hour show, originally aired on CBS on Sunday, Harry also said his father, heir-to-the-throne Prince Charles, had let him down.

More than 36 hours later, there has been no response from Buckingham Palace.

Prince Charles, visiting a COVID-19 vaccine pop-up clinic in London, was asked by a reporter what he thought of the interview. He stopped and looked up before turning and walking off without comment.

The interview – watched by 12.4 million viewers in Britain and 17.1 million in the United States – had triggered a crisis and the monarchy needed to adapt to survive, however difficult a response might be, according to British media.

“It could hardly be more damaging to the royal family, not least because there is little it can do to defend itself,” The Times said in a lead article under the title “Royal Attack”.

“The key to the monarchy’s survival over the centuries has been its ability to adapt to the needs of the times. It needs to adapt again,” The Times said.

A royal source said Elizabeth, 94, who has been on the throne for 69 years, wanted to take some time before the Palace issued a response.

Together with Charles and Prince William, second in line to the throne and Harry’s elder brother, the queen will have held meetings with their private secretaries and communications chiefs, a former senior royal aide said.

“This is pretty important and they’ve got to judge it right. I think the queen will have the last say,” said the former aide, noting it was highly likely the Palace would issue a very personal statement in the name of the queen, portraying it as a family rather than institutional issue.