Dolphin was on on her way to England, where she was to live with her grandparents and attend school, when she befriended author and professor
Ian Holbourn. She was in a second-class stateroom during the voyage. She had just eaten lunch and coffee was being served when the torpedo attack occurred. The resulting list was so sudden and violent that dishes crashed off the tables; but she recalled the scene as one of "absolute calm". Holbourn was able to get Avis and the two nurses travelling with her into lifebelts, onto the deck, and into a lifeboat. However, the lifeboat capsized when two men attempted to jump into it. She was rescued from the ocean, but her two nurses, Sarah Smith and Hilda Ellis, were not. The bodies of Smith and Ellis were never recovered. Following her recovery in
Queenstown, she regularly visited Holbourn, who was suffering from
exposure. She continued her friendship with Holbourn up until the end of his life in 1935. Dolphin even once suggested to Holbourn that books specifically written for girls were too boring. In response, Holbourn authored the bestseller
The Child of the Moat, A Story for Girls, 1557 A.D. in 1916. ==Personal life==