An obsessed Sharon Gless fan had her prison sentence shortened from six years to four after a review of her case. A judge ruled that Joni Leigh Penn, 30, who twice broke into Gless's home with a rifle in March, deserved leniency because of her mental problems, her lack of a prior record and the fact that there was no violence and Gless was not home at the time of the break-ins. Prosecutors, however, had said Penn intended to sexually assault Gless, the "Cagney and Lacey" Emmy winner now starring in "The Trials of Rosie O'Neill," and commit suicide in front of her.