Did you check her teeth?
I don't feed marrow bones anymore they are just too hard and have been known to break dogs teeth. I give Hannah ribs as a chew toy and while they don't last long like a marrow bone its just not worth the risk to me.
Chessie and Jinx (cats)- crap! Been trying to switch them to raw but I've given up. I am going to be switching them to better food though. I think I'm going to go with GO!
Toby (rabbit)- Oxbow Bunny Basics T pellets, timothy hay and veggies. Fruit for treats. She passed away...