Former first lady Barbara Bush, died Tuesday at the age of 92 in Houston, Texas. She was the second woman in U.S. history to be a first lady and mother of a president.

In a previous statement Sunday, the family said Barbara had decided not to seek additional medical treatment and instead sought comfort care at home for unspecified health complications.

“My dear mother has passed on at age 92. Laura, Barbara, Jenna, and I are sad, but our souls are settled because we know hers was. Barbara Bush was a fabulous First Lady and a woman unlike any other who brought levity, love, and literacy to millions,” former president George W. Bush wrote in a statement Tuesday night.

The statement continued, “To us, she was so much more. Mom kept us on our toes and kept us laughing until the end. I’m a lucky man that Barbara Bush was my mother. Our family will miss her dearly, and we thank you all for your prayers and good wishes.

Jean Becker, the chief of staff to Mr. Bush, gave up an update that the former president is “heartbroken.”

“He held her hand all day today and was by her side when she left this good earth,” Becker’s statement read. “Obviously this is a very challenging time. But it will not surprise all of you who know and love him, that he is also being stoic and strong, and is being lifted up by his large and supportive family.”