Twisted Ankle (Hock) Sprain in Guinea Pig: Swollen, Heal Time?

My guinea pig has a sprained ankle from a little exploration accident. Her foot/hock/ankle is swollen and she is limping. I have her separated and in a smaller cage with lots of fleece and Carefresh bedding. I took her to the vet and he said that it wasn't broken, and that she will be fine. It has been 6 days, and she does not seem any better. When will the swelling go down and when will she not limp? Are there any specific fruits or veggies that are anti-inflammatory? Her fresh foods are mostly dark romaine lettuce, parsley, and melon bits (water, cantaloupe, honeydew) she is pretty picky. When will she be all better? How long does a twisted ankle last? Thanks for the answers, from me and Hamlette.