I think it was Alicky's nature to brood. Most of her other siblings were very much British among the lines of "get on with it" (especially VMH and Irene), while Ella & Ernie were most sensitive. However They too know what their duty lay and did not dwell onto it. Although Alicky lost her mother at an early age, she was well looked after by her sisters and of course their grandmother QV, who had great influence on young Alicky. No, I think she would have been the same way had Alice lived. Look at Sisi who had her mother with her, but still turned out to be sensitive and a recluse (in a way like Alicky). Both women hated crowds and could not function well in a public setting.