I have a rescue sheltie I got her at 8 years old 4 years ago she was in a terrible state and my Rough Collie Ben took her under his paw and gave her confidence, Ben I am afraid had to be PTS 2 weeks ago and since then Mops has been grieving not interested in anything walks food etc just sits in Ben's chair looking sad any advise on how I can help her would gratefully received.xx