Homebound Martha Stewart says four hours of commuting time into Manhattan is limiting her abilities to perform her daily activities.

Stewart is allowed just 48 hours per week away from her Westchester farm estate as part of her sentence for conspiracy, obstruction of justice and other charges, and must wear an electronic ankle bracelet that tracks her movements as part of home confinement.

But in court papers filed with Manhattan Federal Judge Miriam Goldman Cedarbaum, Stewart claims the time in transit is cutting into her allowance of time for work, visiting the doctor, attending religious services, grocery shopping and visiting her 90-year-old mother, the New York Daily News reported Tuesday.

Susan Lyne, CEO of Martha Stewart Living Omnimedia, told the newspaper Stewart was led to believe commuting time and certain "essential appointments" wouldn't be counted against her 48-hour window of freedom.