I would splint it.  Here is a short article with a couple of pictures: 
http://diydiva.net/2013/04/wherein-i-splint-a-chicken-toe/
Lots of ways to do it.  If you can't get a splint to stay on the single toe, you can also use a lid from a plastic container, cut a circle or foot shaped piece, and tape the toes to that in their proper position, similar to what you would do for a chick with curled toes.  Some birds will work at whatever you put on there and try to get it off, so you may have to experiment.  Vetwrap is the best thing to use as it doesn't stick to the bird, but you may have to use tape.  It will take several weeks to heal, and I would try to minimize any jumping that she does.  Just make sure that it is tight enough to do the job, but not too tight (check regularly), and that whatever splinting material you use does not cut into or rub the area.  cardboard or tag board rolled around it might work,  lots of options, be creative.  Many chickens do fine with crooked, misshapen toes, but depending on how the toe hits the ground it could become a likely area for bumblefoot to develop so I would try to get it as close to normal as you can.