Ayda Field thanked husband Robbie Williams after she was rushed to hospital with a mystery illness.
The actor and model wife of former Take That star Williams, 49, posted a picture to Instagram of her sitting in a medical facility attached to a drip.
The 44-year-old hailed her husband after she fell ill during a “picture perfect” night in Los Angeles.
She wrote: “After a picture perfect evening, a less than picture perfect ending. Back now and resting thanks to my wonderful hubby @robbiewilliams for being by my side.”
The night before her post, the couple were spotted enjoying a night out at Beverley Hills restaurant Cipriani – where they were joined by Dame Joan Collins and her husband, Percy Gibson.
The couple – who married in 2010 – share daughters Teddy, 11, and Coco, five, and sons Charlie, nine, and Beau, three.
Their eldest Teddy briefly appeared in Williams’s recent Netflix documentary.
Released at the end of last year, Williams – who is headlining a BST Hyde Park concert this summer – said he wanted to make the documentary to “take back power” of his own life narrative.
Speaking at the premiere in November, held at the London Film Museum in Covent Garden, London, Williams said: “In a way, it feels like being the birthday boy, it feels like a very special occasion.
“I feel very vulnerable, because I’m yet again laying myself (out) there and oversharing about myself, in the hope that I will be seen somewhere, somehow because I’ve never been really in control of the narrative on who or what I am out there.
“So it’s a very important tool for me to have to represent myself in the best way possible.”
He also said: “It does feel like taking power, but also exploiting it for commercial gain.”
At the time, Field said Williams is a “good co-communicator” in their relationship.
She said she hoped people would stop thinking of him as a “brash showman” and a “peacock” who is “arrogant”.
Field said: “I’d really like them to understand the man because the man is a really kind man.
“Also with his mental health and his struggles and his openness with addiction, I really hope if someone’s watching this docuseries and it resonates for them and it helps them and kind of gives them some comfort that other people, people who are famous, also struggle on that.
“There is a beautiful story and a beautiful ending that’s possible.”
She also said: “The actual process of shooting, it was very emotional. Rob would kind of be locked in a room for 14 hours, and then walk out looking like he’d seen a ghost and quite fragile, and the kids would not understand what was happening.
“And I didn’t really know the extent of what he was watching so I can only kind of, cheerleading from the side and kind of build him up and think we would just kind of hold hands and watch reality TV and make things better for the next day, and it’s weird that it’s finally here, because we’ve had to live through it.”