Yes they are definitely fun for them! =] I hang mine up and my two like to play "volley ball" with theirs together HAHA. Especially if there is a tasty treat to lick she most likely won't think about chewing. They also have this toy called a "pacifier" where you mount it onto your horse's stall wall and they can take their lips and roll around on it for fun. I haven't tried it yet, but I'm going to get one and do so. They also have sprays on the market to put on the area they chew on that tastes bitter and repels/discourages them from chewing. Good luck!BTW, if it gets worse, they have cribbing collars with sheepskin lining that you can use on her to stop the cribbing/wind sucking.
John 14:6 - Jesus said unto him, "I am the way, the truth, and the life: no man cometh unto the Father, but by Me."