What does will here mean?
Its (talking about a child) will is experienced as something separate from its mother's behavior.

Does it mean the determination to do something?

Question

What does will here mean?
Its (talking about a child) will is experienced as something separate from its mother's behavior.

Does it mean the determination to do something?

Answer

A person's will is their ability to choose to do as they please.

It's commonly known as free will. See here: https://www.collinsdictionary.com/dictionary/english/free-will

Answer

also, * what does will mean here?

;)