President Barack Obama and the First Lady Michelle Obama released a tribute to Reagan which recognizes her generosity, sage advice and advocacy for Alzheimer's awareness and research.
"Nancy Reagan once wrote that nothing could prepare you for living in the White House," the couple said in the statement obtained by PEOPLE. "She was right, of course. But we had a head start, because we were fortunate to benefit from her proud example, and her warm and generous advice."
"Our former First Lady redefined the role in her time here. Later, in her long goodbye with President Reagan, she became a voice on behalf of millions of families going through the depleting, aching reality of Alzheimer’s, and took on a new role, as advocate, on behalf of treatments that hold the potential and the promise to improve and save lives."
"We offer our sincere condolences to their children, Patti, Ron, and Michael, and to their grandchildren. And we remain grateful for Nancy Reagan's life, thankful for her guidance, and prayerful that she and her beloved husband are together again."
Reagan, the stylish and strong-willed widow of the 40th President of the United States, Ronald Reagan, died of congestive heart failure. She was 94.
Reporting by SANDRA SOBIERAJ WESTFALL