Separating them for a week isn't long enough.
If the female is that aggressive toward the male then they need to be separated permanently.
You need to separate them into individual cages and move one of the cages into a different room.
Play music in the rooms so they don't hear one another as much and spend time with each of them individually.
Not all budgies get along and the owner must be prepared to take the necessary steps to ensure the budgie being dominated is not hurt either physically or emotionally which can easily happen if the abuse continues.