ACCRA, Ghana — It had been 12 years since Rita Sarpong went home to Ghana. She’d missed siblings’ weddings, the births of nieces and nephews, even the death of her father, sacrificing time with her own family so that she could help frail, aging Americans stay at home with theirs.Almost up to the moment she boarded the plane, Sarpong was working nearly around the clock. A home health aide, she cared for a 90-year-old retired insurance agent with severe arthritis by day. Then at night, she drove from Newton to Wrentham to look after a woman in her 80s who was prone to falling. Related Links Stranger in the house That made for 104 hours a week of work that was equal parts tedious, stressful, exhausting, and essential. After she reached Logan Airport, dragging three suitcases loaded with gifts for her family — mainly used clothes from her closet — Sarpong collapsed in her seat. For the next nine hours, as food carts rolled by carrying lunch, dinner, … [Read more...] about PIPELINE FROM AFRICA: Recent immigrants do much of the low-paying, back-breaking work of caring for frail Americans at home. Back home, they’re seen as success stories.