Hello snevin13, and welcome to NeuroTalk.

As a person with MS, I find loss of short term memory to be the most bother-some symptom that I have to endure at the moment.

There's lots of information about the topic on the Internet, but have look at this link. Although this is from the National Multiple Sclerosis Society, I'm sure you find the information relevant to your sister's needs.

http://www.nationalmssociety.org/liv...ory/index.aspx

Good luck. I hope you find what you're looking for.