Because there were no alternatives. That's what I'm thinking.
If you don't think there's fortitude in getting out of bed every morning, then lemme tell you, there is.
If you don't think there's fortitude in practicing hygiene every day, then lemme tell you, there is.
If you don't think there's fortitude in keeping the bills paid every month, then lemme tell you, there is.
And, there's more. You know there is more.
Read the story again, Anne Sullivan was a mess. Someone chose to take a chance on her. She fought the person at first, likely because she didn't trust, she had no faith, but the chance had been taken and the person did not give up. It appears to me that Anne was given a glimmer of hope. She didn't see the way things were as an alternative, therefore, having no alternative, she daily tested and put more faith in the glimmer of hope. Her experience enabled her to take a similar chance on Helen Keller, to give Helen a similar opportunity, to take away alternatives from Helen.
By searching the web for whatever it was you searched that lead you to GJ is an example of the chance you've taken on yourself and your effort to change your alternatives. Now that you've taken the chance, I hope you won't give up. Look at yourself as if from a distance; I believe you'll see more than a glimmer of fortitude.