I'm surprised the Doctor's wife was such an Innocent!
The scene between the Doctor's wife and the FURIOUS wife of the Wing Commander was quite something.
And I think it was a little unrealistic.
Even though the Doctor's wife is in total denial about her 2 grown daughters and their sexual "adventures", she is still a Doctor's wife/secretary, and has surely seen everything imaginable come through the Surgery, and can handle the facts, once shouted at her by the angry wife, in a commonsense manner.
There is a time for polite denial, but there is a time for having a "sit-down" in the parlor with this stranger and talking turkey, instead of fluttering and simpering that "nothing happened".
"We will bury you"-NIKITA KHRUSHCHEV