Janis, 53, was recently diagnosed with debilitating disease multiple sclerosis and admits that the stress of looking after the troubled singer has been making the condition worse.
Winehouse checked into a rehab clinic in London earlier this year (Jan08) after a video showing her allegedly taking a variety of illegal substances was passed on to British newspaper The Sun.
And the star's mother, along with Amy's father Mitch, has been charged with helping her through her problems.
But Janis insists she can no longer keep up and reluctantly agreed to step away from the 22-year-old for the sake of her own health.
She says, "I physically can't cope with all the running around Mitch does to try and keep her out of trouble. I had a relapse recently and I don't' want another one."
Source: WENN