FORMER first lady Barbara Bush, who was reported in “failing health” over the weekend, is in “great spirits” and resting comfortably at home, said her granddaughter today.

The 92-year-old is “a fighter” and the family is grateful for “everybody’s prayers and thoughts,” Jenna Bush Hager told NBC’s Today on Monday.

Bush family spokesman Jim McGrath said in a news release Sunday that “Mrs Bush, now age 92, has decided not to seek additional medical treatment and will instead focus on comfort care” at home in Houston following consultations with her doctors and family.

Mr McGrath did not elaborate on the nature of Mrs Bush’s health problems but on Monday said she has suffered in recent years from congestive heart failure and chronic obstructive pulmonary disease.

She also has been treated for decades for Graves’ disease, which is a thyroid condition, had heart surgery in 2009 for a severe narrowing of her main heart valve and was hospitalised a year before that for surgery on a perforated ulcer.

Jenna Bush Hager, an anchor on NBC’s Today, told the program on Monday morning that her grandmother was resting comfortably with family. “She’s a fighter. She’s an enforcer,” Hager said, using the family’s nickname for her grandmother. “We’re grateful for her, for everybody’s prayers and thoughts, and just know the world is better because she is in it.

“We are grateful for her. She’s the best grandma anybody could have ever had ... or have.”

Mrs Bush is one of only two first ladies who was also the mother of a president. The other was Abigail Adams, wife of John Adams, the nation’s second president, and mother of John Quincy Adams, the sixth president.

Mrs Bush married George H.W. Bush on Jan. 6, 1945. They had six children and have been married longer than any presidential couple in American history. Eight years after she and her husband left the White House, Mrs Bush stood with her husband as their son George W. was sworn in as the 43rd president.

Ms Hager said the former president “still says, ‘I love you Barbie’ every night,” describing their grandparents’ close relationship as “remarkable.”

Mr McGrath said Mrs Bush was concerned more for her family than herself. “It will not surprise those who know her that Barbara Bush has been a rock in the face of her failing health, worrying not for herself — thanks to her abiding faith — but for others,” he said.

President Donald Trump’s press secretary, Sarah Huckabee Sanders, said in a statement Sunday evening that “the President’s and first lady’s prayers are with all of the Bush family during this time.”

Mrs Bush is known for her white hair and her triple-strand fake pearl necklace. Her brown hair began to grey in the 1950s, while her three-year-old daughter Pauline, known to her family as Robin, underwent treatment for leukaemia and eventually died in October 1953. She later said dyed hair didn’t look good on her and credited the colour to the public’s perception of her as “everybody’s grandmother.”

Her pearls sparked a national fashion trend when she wore them to her husband’s inauguration in 1989. The pearls became synonymous with Mrs Bush, who later said she selected them to hide the wrinkles in her neck. The candid admission only bolstered her down-to-earth public image.

Her 93-year-old husband, the nation’s 41st president who served from 1989 to 1993, has also had health issues in recent years. In April 2017, he was hospitalised in Houston for two weeks for a mild case of pneumonia and chronic bronchitis. He was hospitalised months earlier, also for pneumonia. He has a form of Parkinson’s disease and uses a motorised scooter or a wheelchair for mobility.

Before being president, he served as a congressman, CIA director and Ronald Reagan’s vice president.

Barbara Pierce Bush was born June 8, 1925, in Rye, New York. Her father was the publisher of McCall’s and Redbook magazines. She and George H.W. Bush married when she was 19 and while he was a young naval aviator. After World War II, the Bushes moved to Texas where he went into the oil business.

Along with her memoirs, she is the author of C. Fred’s Story and Millie’s Book, based on the lives of her dogs. Proceeds from the books benefited adult and family literacy programs. The Barbara Bush Foundation for Family Literacy began during her White House years with the goal of improving the lives of disadvantaged Americans by boosting literacy among parents and their children.

The foundation partners with local programs and had awarded more than $40 million as of 2014 to create or expand more than 1500 literacy programs nationwide.