I'm so sorry that you are going through this Lynn. I'm still not convinced that this is Alzheimer's - if she didn't have these symptoms before the surgery, then it just can't come on this quickly. It is possible that she had a stroke or something. I think the behaviors will get much better if/when she is off the current meds.
I know you live in a small town or rural area - so you may not have something like an Area Agency on Aging near you. I've enclosed the link to the Indiana Association for Area Agencies on Aging.
http://www.iaaaa.org/ And this might tell you the one closest to you
http://www.iaaaa.org/members/aaalist.asp This is where I would start if I were in your shoes. They are an advocacy agency for persons in your situation, at least the ones in Texas do that. Most agencies have case workers or social workers who can help families in your situation. They have lots of information, see if you can get some hellp there.
You need a facility that has a special unit for persons with dementia. Hopefully, there are some facilities in your area that have these types of units. Usually, a facility with a dementia unit can handle any type of dementia behaviors. The staff is specially trained to work with patients with difficult behaviors.
Is there a social work service in your area? Social workers are usually great resources for these kinds of issues. I'm so sorry, I wish I were there. I would try to help you. I have worked with persons with dementia and their families for the past 15 years.
Good luck, I know it is very difficult.