nyia parler , 41 , allegedly left her 21-year-old son in woods on monday and traveled to maryland .
on tuesday , she wrote ` i 'm so happy ' on facebook .
allegedly left her disabled son to fend for himself while she traveled for a romantic getaway with new boyfriend .
her son was found under rain-soaked pile of leaves on friday night and police say he would have died if passers-by had n't spotted him .
he was lying on the ground 10 feet from his wheelchair and a bible .
police have said that parler has been admitted to hospital for an ` undisclosed condition '
she will face extradition and arrest in pennsylvania on her release .