Amy, hon, do you not have any help? How old are you? She may have some slight FTD, if her words don't make sense. Have you contacted your local ALS Assoc? They may have a loaner device that she can use to communicate. If they don't, you need to contact the ALS Clinic to get her evaluated for a speech device and FTD.
As for rubbing the arms and legs, she may be itchy. That is a common problem with pALS. You may want to try to scratch where she is rubbing to see if it helps. If so, it will take trial and error to calm the aggravating itching problem. She may need an anti-anxiety med to calm it down or a simple cream/lotion.