Complex sentence: In 1915 she and Speckart raised a child, Mary, who later came to prominence herself, when at age 16 she became the youngest woman in the Pacific Northwest to fly an airplane solo.
Split into simpler sentences: In 1915 she and Speckart raised a child, Mary. Mary Equi later made news herself, when at age 16 she became the youngest woman in the Pacific Northwest to fly an airplane solo.