When and what did she eat last? Could be a blockage?
I would rest her gut for 24 hours(limit water intake to small amounts) and get some slippery elm bark capsules. After the fast, start a bland diet of cooked burger or chicken and double boiled rice, canned pure pumpkin. Give 2 caps of the SE mixed into a spoonful of yogurt, cooked scrambled egg or pumkin a half hour before you feed...do that for several meals. Consult your vet, but be warned they will probably blame the diet for the gut issue. I'd not start back on raw for a few days after being on the bland diet.
Also make sure you aren't over feeding and that you are feeding a good balance of meat/bone/organ(but not much organ!)