I would strongly suggest that your mother consider another breed. My friend has a Boston Terror and she is highly active and if not exercised will destroy his house, shoes, towels, etc. She is almost 3 years old and he still has to cage her whenever he leaves the house. Boston Terrier rescue groups already have alot of these dogs to place due to people not realizing the high amount of exercise and work needed with this breed.

Shih Tzu's may have alot of hair (which can be cut several times a year) but they are laid back and not destructive. They don't need a lot of exercise either...great for an older person.

Boston Terrors tend to need children in the home to tired them out.

Sorry but this breed just isn't for older people.