Selmer (WVLT) -- Former Knoxvillian Mary Winkler is fighting to regain custody of her three little girls.
Her in-laws have been trying to terminate her parental rights and adopt their grandchildren ever since Winkler's conviction for killing her minister husband.
She's has asked the Tennessee Court of Appeals to block those efforts.
Mary Winkler shot her husband Matthew to death, in their church's parsonage last year.
His parents have had custody of the girls since her arrest.
She faces three to six years in prison after being convicted of manslaughter.
She'll be sentenced next Friday.