We are told almost nothing about Percy's wife, so she is essentially an OC. But they may be a few things about we would be able to guess by looking at Percy's character and personality.
Where do you think they could have met? How do you think they could have met?
Do you believe she works for the Ministry as well?
What kind of woman do you believe that Percy would be attracted to?
Do you see Audrey's focus on her family, or her career?
Do you see her as being as strict as her husband would be with their daughters?