Complex sentence: Sturm was also the chief facilitator of Alice being able to finish these important historic interviews and, by her constant support of her grandmother, Joanna, literally prolonged her life into her mid- 90s.
Split into simpler sentences: Sturm was also the chief facilitator of Alice's ability to finish these important historic interviews. By her constant support of her grandmother, she literally prolonged Alice's life into her mid- 90s.