How does Gertie feel when Bram leaves Germany in the book, Modoc: The True Story of the Greatest Elephant That Ever Lived?

Gertie is devastated when Bram informs her that he has to sail for America in order to take care of Modoc after the sale of the circus. Though Gertie obviously does not want to lose her love, she is able to understand the importance of the situation, and the deep sense of responsibility that Bram has for Modoc.