Real Housewives of Beverly Hills' Kyle Richards Says Yolanda Foster 'Really Struggling' With Lyme Disease

The Real Housewives of Beverly Hills' Kyle Richards told Andy Cohen Tuesday that co-star Yolanda Foster has been "really struggling" in her ongoing battle with Lyme disease.

Kyle, appearing on Watch What Happens Live, said she’s "been in contact a lot via text and emails" with the Dutch model, who recently revealed she’s "lost the ability to read, write, or even watch TV" as the ailment progresses for the worse.

"She's just really struggling, you know? She's actually in Singapore right now -- she was in Korea, now she's in Singapore," Richards said of her 51-year-old friend, whose sought treatment overseas following a brutal relapse around the holidays, in her third year fighting the disease.

"I'm just hoping she’s gonna get better soon -- it’s terrible," Richards said.

Watch the video on RadarOnline.com

A wincing Cohen added, "Debilitating."

As RadarOnline.com previously reported, money has been no object to Foster’s music producer husband David Foster, in his quest to bring his wife back to health.

"It’s extremely hard for David watch Yolanda try to struggle to find a word, or recall something from the recent past," an insider told Radar. "David has vowed to spend whatever is needed to get her cured. The treatment outside of the United States isn’t covered by insurance, and it’s very expensive. Luckily, they can afford it."