Gjertine Nikoline Eriksen or Knudsen

Gjertine went with Salmo from Trondheim on July 9. 1903. She was born on July 26th. 1876 in Moskenes, Nordland. She left a son back home(born in 1898). Destination says Boston, but where did she go from there? Her son should come to her in America years later, but when he was supposed to go, she died. Some relatives believe she met a Swede on board and married him. How can I find out where she went from Boston? Gjertine's parents were Knud Eriksen and Helene Kristine Olsdatter. Turid Engh Moe