Glad to hear shes perking up! Maybe it was just a strained muscle of some sort.
Just keep her in until she can walk. That way she won't get picked on by the other chickens for her weakness.
No I don't think you would have to do anything special, if she can get around to food and water she should be fine. Just keep an eye on her.
Yes they can get 'bed sores'. If shes lying down a lot try and keep her in different positions. Also keep her on soft clean shavings, a good cushiony layer of shavings. So yes if shes laying in the same spot a lot I would move her some.
Just keep the bedding clean, change it once its dirty. If you can also push the poop to a spot where she isn't setting when you see it to get it out of the way.
No, there's no such thing as a dumb question. When I don't know something I ask a million questions Lol! Don't feel bad! That's how we learn stuff.
Something else:
You might want to check her feet for bumble foot. I've heard that can cause leg pain, trouble walking and infection. I have no personal experience with this yet but here's a site that explains a little bit and how to treat. Worth looking into!
I'd google it too, along with googling the symptoms she has to see if you get any hits for different stuff we don't know about.
http://www.the-chicken-chick.com/2011/07/bumblefoot-causes-treatment-warning.html