be made by 와 be made of(from) 의 차이점

저기 잘못 알고 계신것 같은데,,

위 문장을 수동태로 바꾸면

They made her happy.

She [ was ] [ made ] happy (by them).  그대로 되구요..

be made of : ~으로 만들어지다(물리적변화)

ex) The desk is made of tree.

be made for : ~으로 만들어지다(화학적변화)

ex) The cheese is made for milk.

입니다...^^