Father produces two type of Sperm X and Y ,where as Mother produces only one type of ova i.e. X
If X sperm fertilises the ovum, then sex of the child is Female.
Whereas, if Y sperm fertilises the ovum. then the sex of child is Male.
So in this family. the X sperm fertilises the Ovum, so Sex of the child is Female and family has only Daughter.