David Crotty / Patrick McMullan / GettyImages.com 1 / 9
David Crotty / Patrick McMullan / GettyImages.com 1 / 9

She's back.

Charlie Sheen's ex-wife Brooke Mueller, 39, has kept an understandably low profile since the actor revealed his HIV diagnosis in late 2015 -- news that was followed by dozens of lawsuits and a financial crisis for the star, who was once the highest-paid actor on television.

But earlier this month, Brooke resurfaced at the Hearst Castle Preservation Foundation's annual benefit weekend luncheon in San Simeon, California, where Page Six's Richard Johnson caught up with her.

"I've been hiding out," she told the New York Post columnist at the Oct. 1 event.

Brooke explained that since regaining custody of her and Charlie's 7-year-old twins, Max and Bob Sheen, following a lengthy addiction battle, she's been living quietly in Park City, Utah.

There, reports Page Six, her boys have been "riding horses, rock-climbing, skiing and attending public school."

"I'm bored as hell," Brooke admitted, "but for the kids, this place is fantastic."

Old reports that the boys were learning disabled have proven untrue. "It turns out the emotional trauma of their family dysfunction had led to misdiagnoses," the columnist reported on Oct. 16.

"They are thriving, and one boy has skipped a grade and is in a gifted program," he added.

Brooke confirmed that she did not acquire HIV, the virus that causes AIDS, from her ex. "I'm fortunate I didn't get it," she said. "I've been tested more than anyone."

Despite years of turmoil and a roller-coaster relationship with Charlie, 51, she said they are currently on good terms.

In August, it was revealed that Brooke and Charlie's second ex-wife, Denise Richards, 45 -- the mother of his girls Sam, 12, and Lola, 11 -- had both agreed to reduced child support payments.

Sources told TMZ at the time that both his exes agreed to accept around $25,000 a month instead of the $55,000 they'd been getting since Charlie -- who once earned $1.8 million per episode during his "Two and a Half Men" sitcom days -- is now making "next to nothing," TMZ reported.

The reason Denise and Brooke were so accommodating?

They knew that if Charlie went to court to ask for a reduction in child support, TMZ reported, the judge would have cut his payments to just $10,000 a month.

To sweeten the deal, the site added at the time, Charlie "threw in some real estate for Brooke and Denise and committed to doing a show with Denise."

Brooke also admitted to Page Six she's used to living in the lap of luxury and hasn't given up her lifestyle despite the reduced child support payments. (She grew up in Palm Beach, Florida, the newspaper reports, "with winters in Aspen, Colorado, and summers aboard a yacht on the Riviera.")

"If I didn't have family money, the kids and I would be struggling," she said, revealing that she and her sons -- plus a nanny, a housekeeper and the family dog -- had flown in for the benefit on private jet.