I read you other post as well as this one. For the settling in part give her some time to adjust. If she was used to being outside, and is now inside that is a big change. Horses like to be out where they can see everything and there surroundings, they are naturally a bit claustrophobic.
When she is in the barn make sure it is a good place to be, have a slow feed hay bag for her, spread her feed around in several buckets so she has to forage around a little bit to get it. Try and give her things to do to keep her brain busy, and help her relax.
As for the tying more information about what she does when tied would be useful. Does she pull back, does she dance around, paw etc..? But if your tying in the barn and she is nervous about being in the barn, I would try tying her someplace else out in the open where she is more comfortable. That would also solve the problem in your last post about pinning you against a wall, which by the way I would use a crop or training stick and whack her on the side of her barrel to get her off/keep her off of you.
As for the not wanting to pick up her one foot, as read in other post, maybe her feet are sore from standing around in the mud and it is a defense mechanism because she is hurting. Or maybe it is a learned behavior from her prior owners.
Regardless I would find someone with some training experience to help you find your way with this horse. While these are relatively simple things to fix, no offense, your asking for help to fix to them which tells me you don't have a lot of experience with small things, much less bigger things. They are all symptoms of a cause and if you don't fix them they will become bigger issues.
Good luck to you.