Diane Keaton faced an “unexpected” health crisis in the final months of her life.

“She declined very suddenly, which was heartbreaking for everyone who loved her,” a friend of the Oscar-winning actress told People following Keaton’s death on Saturday at age 79 .

“It was so unexpected,” the friend added, “especially for someone with such strength and spirit.” 7

Keaton’s pal also revealed the star’s family intentionally kept her health battle private.

“In her final months, she was surrounded only by her closest family, who chose to keep things very private,” the friend shared. “Even longtime friends weren’t fully aware of what was happening.”

People also noted that Keaton listed her “dream home,” a five-bedroom, seven-bathroom property in Los Angeles, for $29 million in March,

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