They make specific covers for coffee tables and such, I looked one up and here is a link: http://www.safebeginnings.com/WebComponents/Catalog/Publi...
Another idea I had is to put just a light sprinkle of pepper or something that doesnt taste good at all on the edges of the furniture. You shouldnt have to do this too long before she gets the bad taste a few times and decides to stop! In the meantime, I'd also try to get more teething toys or some larger hard plastic toys that she might decide to work on after she realizes the wood tastes yucky now. :)
I also thought of Pica, which is a disorder in young children that causes them to eat dirt, wood and all kinds of yucky stuff. But I looked it up and it says that before 18 months, they dont consider this a medical problem. Its only if they are doing it after 18-24 months of age.