NEW : State 's high court denies motion to set execution date for 57-year-old . State Supreme Court continues to review Michelle Byrom 's post-conviction motion . Michelle Byrom was convicted of masterminding her husband 's 1999 murder . She has been on death row since 2000, and is scheduled to be executed in Texas next month.
NEW : State 's high court denies motion to set execution date for 57-year-old . State Supreme Court continues to review Michelle Byrom 's post-conviction motion . Michelle Byrom was convicted of masterminding her husband 's 1999 murder . Son has admitted to crime in letters and to psychologist , but not when put on stand .