Greetings Melody,Welcome to the group. I'm sorry to hear that your mother has been diagnosed with autonomic neuropathy, but I can sympathise and empathise with her over this. I've had it for probably 10 years now.
Here are a few sites that will give you information regarding autonomic neuropathy. (I've placed them such as my favourite two listed at the top. They're easy to follow, and give a good description.)
http://www.mayoclinic.com/health/autonom...
http://www.diabetesuffolk.com/Complicati...
http://en.wikipedia.org/wiki/Autonomic_n...
http://www.nlm.nih.gov/medlineplus/ency/...
http://www.patient.co.uk/showdoc/4000079...
http://diabetes.niddk.nih.gov/dm/pubs/ne.../
http://www.emedicine.com/neuro/byname/au...
http://www.healthscout.com/ency/1/000776...
I'm not really sure what it is you wish to know about autonomic neuropathy so I'll let you read first. If you have any questions, please do feel free to ask. I'm only an email away. 
Be well, dear lady.
Blessings to both yourself and your mother.
Lots of Love and Light.
Mick
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P.S. Please don't be offended, or alarmed, at the "x's". It's simply a logo, of sorts, that I've used for some 30-odd years now.