Former first daughter Patti Davis on Monday called Nancy Reagan’s death something that “wasn’t a surprise,” in a brief public statement about her mom’s passing.

“My mother had been in poor health for quite a while, and recently had gotten markedly worse, so this wasn’t a surprise,” Davis posted on her website.

Davis and her parents were famously estranged for years due to their diametrically opposed political views, though she and her mom enjoyed some reconciliation following former President Ronald Reagan’s death in 2004.

“That said, death always feels like a surprise. I appreciate the attention and prayers of people I will probably never meet. Just as when my father died, there is comfort in feeling surrounded by gentle thoughts and kind wishes, often sent out by strangers.”

In her statement, Davis said she’ll mourn in public, before sharing more “complicated” feelings about her mother in private.

“And just as when my father died, we will honor my mother publicly — stand on the public stage and share as much as we can,” according to Davis. “Then, when that is completed, we’ll draw the circle in a little tighter and deal with the often complicated map of personal loss.”

The presidential daughter said she was dismayed that a gossip site posted news of her mom’s death before the family had a chance to put out a statement.

“I got the call around 8:30 this morning, March 6, that my mother had died peacefully in her sleep. It was how she wanted to go,” Davis wrote. “Fifteen minutes later I was in my car driving to her house and people began calling me, expressing their condolences, which was strange because I knew we hadn’t put out an official statement yet.”

She added: “Somehow, TMZ had gotten the news and had sent it out — none of us know how and we probably never will. It comes with the reality of living and dying in the public eye. It’s a strange dance, but one I’m familiar with.”

Davis and brother Ron Reagan turned into liberal activists, in contrast to their father, a conservative icon.

And Davis penned a 1992 autobiography that painted an unflattering portrait of her parents.

But in the years following President Reagan’s death, she and Nancy Reagan seemed to reconcile, appearing together in support of stem-cell research — which is opposed by many conservatives.

Ron Reagan, appearing on NBC’s “Today” show on Monday, recalled how his mom was filled with “anxiety and fear” following the 1981 attempted assassination of the president.

“I don’t think she ever had another day during his presidency where there wasn’t some fear involved and in particular when he went out in public,” he said. “He meant everything to her.”