Three of Tammy Wynette's daughters sued the late country singer's

doctor and her husband for up to $50 million Monday, the first anniversary

of her death. The suit claims wrongful death, medical malpractice and

negligence, according to the daughters' lawyer, Ed Yarbrough. Tina Jones,

Jackie Daly and Georgette Smith believe narcotics administered by Dr.

Wallis Marsh to treat a gastrointestinal disorder contributed to the

blood clot that killed their mother, Yarbrough said. And Wynette's

husband, George Richey, failed to take Wynette to a hospital the day

before she died -- against Marsh's orders -- according to the lawyer.

Neither Richey nor Marsh could not be reached for comment Tuesday

(April 6).