Question

what filled helen with joy even before her teacher came?

Answer 1

knowing her teacher is absent.

Answer 2

Helen Keller was excited when Anne Sullivan entered the school.

In fact she compares her arrival to the Jews escaping the curse of slavery in Egypt.

The teacher is the source of knowledge and Keller was ready to absorb what her teacher knew.

Keller knew that her mother was happy when Sullivan came calling.

It was the turning point in her life.