Well, I don't have any different suggestions about her poor coat, but did you consider the dreaded Avon Skin-So-Soft for the fleas? I swear to god, that stuff is SOVEREIGN for anything to do with a bug!
If you mix it one parts SSS to 2 parts water, and use a really fine non-aerosol hairspray bottle/mister, it really does work. Mom's used it for at least 30 years to keep bugs away from the camping gear and off the dogs when we go out in the woods.
And I suppose a little topical moisture from the spray couldn't help but soften her coast a little.