It was Much quieter. The reason this is true is because if you were to say it is more quieter, it wouldn't make sense. It would make more sense to say it was more quiet.
You can often tell what a word means by its context in a sentence.
Mathilde is lazy and unimagative because she feels uninspired to wear what she wants.
Answer: That they have brainwashed the person.
Explanation: I believe the tone of these lines are that the people have brainwashed her into believing she is "stubborn and childish" even thought she may be the opposite of that .