Lois Ann Goodman also suffers from rheumatoid arthritis, hearing loss and constant spinal pain that's controlled by an electronic device implanted in her spine and is awaiting another shoulder replacement, attorney Alison Triessl said in the filing late Monday.
"It is physically impossible for her to have done this," Triessl told The Associated Press in a phone interview Monday night.
Triessl asked the judge to reduce Goodman's $1 million bail to $100,000 or release her on electronic monitoring.
"Mrs. Goodman is not a danger to any person or the community," Triessl wrote in the motion.
Goodman and her husband, Alan, have three daughters and were nearing their 50th wedding anniversary when he was found dead on April 17 at the couple's condominium in the Woodland Hills neighborhood.
Authorities briefly accepted Lois Goodman's explanation that she returned home to find a blood-covered coffee mug and her husband lying in bed not breathing after most likely falling down the stairs.
Prosecutors now allege that Goodman bludgeoned her husband to death with a coffee cup that broke and then used the sharp handle to stab him. She was arrested last week in New York, where she was to serve as a line judge for this week's U.S. Open - one of many high-profile tournaments she had worked since 1979.
Goodman agreed not to fight extradition and arrived back in California on Thursday. She has a bail hearing set for Wednesday.
Triessl wrote in Monday's filing that there was no chance Goodman would flee, noting that she doesn't have a passport and has lifelong ties to the San Fernando Valley where she was born, raised and went to school.
She noted that Goodman cooperated when police began investigating the death of her husband and submitted to three intensive interviews, driving herself to the police station when she was summoned.
"She arrived on time and was utterly forthcoming," Triessl said.
Given Goodman's cooperation, she denounced the Los Angeles Police Department's decision to wait until Goodman was in New York to arrest her. She said they could have asked her to turn herself in in California and she would have obliged.
Triessl gave the court 40 testimonial letters from other tennis umpires, neighbors, family and friends, lauding Goodman as a beloved friend, colleague, mother and grandmother who treated her husband like a king. Most who knew her referred to her by her nickname of "Lolo."