I've read that camomile and lavender are calming. Lavender, you need to be careful with, as it shouldn't be consumed in large amounts, but camomile she should be fine with. Many berries are also bunny tonics, like blackberries, for instance, and mulberry leaves have been used in chinese medicine for centuries(mulberry leaves are a-ok to feed bunnies, don't worry).
EDIT: There's also Burt Bees "Rescue Remedy". The one we have is in a small, round container, and the substance is a sort of glossy paste(kinda like lip gloss in the containers you need to stick your fingers into to smear onto your lips). It's generally safe for all animals, and humans, but you might want to google search how safe it is for rabbits and exactly how it should be used to be completely sure. And I only suggest the Rescue Remedy because it IS a homeopathic remedy, and that's only if you don't have any camomile, lavender, blackberry, or mulberry plants around.
I wish her(and you) the best of luck!
Last edited by FlickeringHope; 09-24-2009 at 10:09 PM.