It depends how used to them she is really and how strong her stomach is... Alfie used to be on barf and still gets chicken wings and pork ribs and he's fine to chew marrowbones but Tilly on the other hand won't eat most barf food, she hates it and although she will chew on a marrowbone occasionally I limit it as otherwise she is likely to have an upset stomach. The other thing with beef bones is that they are very hard and can wear down the teeth, I usually take them away from my lot once they've taken off the exterior meat and got as much of the marrow out as they can, before they start to eat the actual bone itself.
