Dr.Graham Bell was an ideal companion to the Helen, because she got meeting with him at the world's fair, and then, all the inventions of Graham Bell was shown to Helen. He became supporting her, whenever they meet.
At the Cape of good hope exhibit, Helen learns much abt the process of mining diamonds. Dr.Bell goes everywhere with them and describes abt things to Helen.
Helen had spent some happy days with Dr.Graham Bell in his home in Cape bentonIsland near Baddeck. He is proficient in many fields of science and makes things interesting. His great passion is his love of children. So, he loved Helen, and explained everything as he could to her.
Thus, Dr.Bell was an ideal companion to Helen.