Ok, I am rather intrigued by this. So I'm going to get nosey.

What medication is your mother taking, and how long has she been treated with AED's?

Additionally, have they done any testing for other things (such as Dementia, etc..)?

From what I have read about this, it could very well be a side effect of medication that could certainly 'alter' her personality. However, there are so many possibilities and whatnot that this could be. Any additional information would be great. Like I said, I'm not familiar with this specific condition, but I'd be more than willing to help you hunt down whatever information you'd like to gather.

-Ellie