Suzy (and I) lost her sister in mid-July. Suzy was fine for about a month, but then, 5 weeks after the loss, she stopped having a normal appetite. She hardly eats her pellet food (Oxbow T) and is no longer a fan of her hay (I use a few different varieties: timothy, orchard grass, and oat hay) of which she has access to plenty. She is not munching on her alfalfa cubes as much as she used to (I added them when the elderly gals were having trouble keeping on weight, it helped a good bit). I am heaping on the dark, leafy greens and have added a small bowl of applesauce with Slippery Elm Bark to her pen (the Slippery Elm is to calm the stomach). She is moderately interested in her salads (she used to gobble them) eating a few pieces and then leaving and coming back later for a few more pieces. She is still drinking plenty of water and going to the bathroom (peeing and pooping) but her poop balls are significantly reduced in size. I have also added a homemade formula I found for nursing abandoned kits, which is evaporated milk, water, egg yolk, and honey with some pediatric vitamin supplement. She will take about 1.5 teaspoons of that from a dropper a few times a day. She has nothing medically wrong with her, other than the resulting weight loss; no fever, her teeth are fine, and her GI tract is still moving (the frequency of her poop and urine is the same, the poop is just smaller). 

How long should I wait before another vet visit? Is this grief? Will she snap out of it?