I'm sorry
he really was young
I'm no expert but I would try to do things that you maybe do already - only more of it. Walks together...more playing - and try to act happy around her so she feels less sad. Sometimes we get so depressed our dogs feed on it - so the best thing is to try to act like YOU are happy and maybe Glory won't feel the loss quite so much.
I know it's easy to say hard to do but I went thru the same thing when I lost my husband. My mood really affected my dogs - I HAD to put on an act because I saw how sad they were - mostly because I was crying all the time.
again - I'm very sorry for your loss.