Sometimes we think that we know what is going on inside of people's hearts and minds that we are certain of our thoughts.
And it makes sense, because based on the experience with them, we think that we know exactly the way they think.
The same thing happened to Hestia, who assumed that Syna might fear her and would eventually leave because she was not a human.
She created a pre sketch that Syna might react like the way she had assumed, the lady predicted that solely based on her premise that Lolita had known her since years and knew how normally Syna behaves under such situations.
But sometimes the circumstances changes a person and a sudden impulse or mostly a stimulus that forces a change, which influences the decision of the person making him or her to decide instantly and completely out of the regular and habitual style of the individual.