:idea: Call the 'Area Agency on Aging'. To find the phone number, look in the Guide to Human Services in the front of your phone book - then look under Aging. The agency can advise you about legal aid issues.
Grandparents do have legal rights to visitation, in many states. My MIL was granted legal visitation rights to see her granddaughter, whom she helped raise. My SIL is always angry at the family, though, so it didn't cause any alienation that wasn't already there.