A few days ago a Tassie devil took one of our two chickens (Isa Browns, 20 weeks old) and now the other is pining I think. She is lethargic, has little interest in eating, sits by my back door most of the day and won't go back into her coop at night. She appears to be physically ok but perhaps has become unhinged psychologically. Should I just give her time or do I get her another companion immediately? They were great buddies and free ranged together all day in our garden. My son, who didn't close their yard gate securely, is also devastated.