Amy Winehouse's stay in rehab isn't just a drag—it's also a drip.
The Back to Black chanteuse was briefly transferred from her undisclosed rehab facility to a London hospital Thursday night, after reaching dangerous levels of dehydration.
Winehouse's press-friendly father Mitch told BBC radio station 1Xtra that the overnight stay was necessary "to rehydrate her after she'd been vomiting" while going through detox.
Once at the hospital, where the 24-year-old was moved due to insufficient medical facilities at the rehab clinic, was placed on an intravenous drip. After spending the night at the hospital, doctors deemed her hydrated enough to return to rehab, where she remains under "medical supervision."
"Everything is going according to plan and she's perfectly okay," the Winehouse patriarch told the BBC of the brief hospital scare.
On Monday, the Winehouse papa spoke frankly to the Sun tabloid about his daughter's travails in rehab, saying she was "very ill" and "suffering horrific withdrawal symptoms—shivering and constantly throwing up. Her body is expelling all the rubbish."
While the "Rehab" singer's reps have kept mum on the expected duration of her detox save to assure music fans upon her admittance last week that she was still expected to take the stage alongside über producer Mark Ronson at the Grammy Awards Feb. 10, her father recently cast doubt on any pending performance arrangements.
"I'm not sure the Grammys are going to happen," papa Winehouse told the Mirror tabloid. "I don't want her to go—I think it might be a bit too son for her. She's not well—that's why she's in rehab."
Still, the concerned father said that his six-time Grammy-nominated daughter was making progress.
"She's doing okay," he said. "She's getting good treatment."
Winehouse entered treatment, reportedly at central London's Capio Nightingale Hospital, on Jan. 24, a day after Scotland Yard confirmed they had launched an official investigation into footage of the troubled singer smoking what appeared to be a crack pipe, snorting an unidentifiable substance, and admitting to haven taken six Valium.