Anxiety is a common early symptom of Alzheimer's but if you doubt the diagnosis (and who wouldn't with all you've been put through!)
, like MBC said, get a second opinion with a MRI to confirm.
There is a simple blood test for B-12 deficiency, your family doctor can order it, your mom should get it as soon as possible.
Does she have numbness or pins and needles in her hands or feet? She could have a disorder called pernicious anemia
. If that is the problem it can be quickly reversed with B-12 shots.
Here's an info page on pernicious anemia: http://www.nlm.nih.gov/MEDLINEPLUS/e...cle/000569.htm