Convicted killer Laura Rideout has been rejected in her bid for a new trial.
Her attorney claims there were errors with the jury instructions before she was found guilty four years ago of the murder of her estranged husband, Craig Rideout.
She has already lost appeals on other issues in the state's highest court.
Rideout, and her son, Colin, were convicted of murder. Another son, Alex, has been paroled from his evidence tampering conviction.
Craig Rideout was killed in his Penfield basement in 2016. His body was found in a rural area in Yates County.