Blood Relations

Six Persons are seen together in a group. They are $\mathit{A},\mathit{B},\mathit{C},\mathit{D},\mathit{E}$ and $\mathit{F}.\mathit{B}$ is brother of $\mathit{D},$ but $\mathit{D}$ is not brother of B. $\mathit{F}$ is brother of $\mathit{B}.\mathit{C}$ and $\mathit{A}$ are married together. $\mathit{F}$ is son of $\mathit{C},$ but $\mathit{C}$ is not mother of $\mathit{F}.\mathit{E}$ is brother of $\mathit{A}$. The number of female member in the group is