Complex sentence: She became the third woman accepted into the Royal Australasian College of Surgeons four-year neurosurgery training program, and in the early 1990s, when half way through her training, she became pregnant with her daughter.
Split into simpler sentences: She became the third woman accepted into the Royal Australasian College of Surgeons four-year neurosurgery training program. In the early 1990s, while half-way through her training, she became pregnant with her daughter.