A woman in southern Maine wrote to the Portland Press Herald Toy Fund that she’s more confident than ever about a bright future for her family. But that’s meant some sacrifices, she wrote, and right now she needs help. “Hi. We are struggling,” she wrote. The single mother has been working hard to build a long-term career while at the same time supporting four children, including three school-age boys and an “adorable” 2-year-old daughter, she wrote. She just finished a career training program that led to a new full-time job, which she began in the fall, and is applying to get an associate degree in lab sciences to improve her earning power and open up new job opportunities. All of which left her unable to provide holiday gifts for her children this year. “I need help.