She cheered him on when he felt himself beaten.

And through her sympathy with Bell and his ambitions, she led her father--a widely known Boston lawyer named Gardiner G.Hubbard--to become Bell's chief spokesman and defender, a true apostle of the telephone.
Hubbard first became aware of Bell's inventive efforts one evening when Bell was visiting at his home in Cambridge.

Bell was illustrating some of the mysteries of acoustics by the aid of a piano.

"Do you know," he said to Hubbard, "that if I sing the note G close to the strings of the piano, that the G-string will answer me ?" "Well, what then ?" asked Hubbard.

"It is a fact of tremendous importance," replied Bell.