Sister in law - a misunderstanding.
If you had a daughter, who you really are, this means that you will fall in love and share the bed with the man. See this cousin, who is actually you do not - it's a major change in the family.
See his daughter - his wife's son, - the dream means that you have to take care of oneself of a temptation: it can be very dangerous. See daughter - his brother's wife - it says that it is likely to suffer because of what some people will do to you mean, betray.
If in your dream woman sees herself as a daughter, then in reality it needs to be ready for radical changes in the life. Good daughter dream to joyful events. And if you dream about a bad daughter, it predicts your future grief, sorrow.
If you had a daughter, wait for some unusual occurrence; it will bring you joy, if you dream you think of the good daughter, and vice versa if the grieving.