Does she enjoy being around babies and/or toddlers? Perhaps she could work as an assistant at a home daycare. When my son was in daycare, his favorite caregiver was a grandmother who worked half-days to help out the provider. (that way the provider could get some paperwork or other business stuff done, knowing that she wasn't the only set of eyes on the little ones.)
This woman also spoke English as a second language, but it really didn't matter at all. She was wonderful with the kids -- a great addition to the daycare. Maybe your mom would enjoy something like this.
Best of luck!