His wife was a selfish woman
The only appreciable thing she did was to tell her husband that she may have done the crime.
Otherwise she was concerned only about her son.
Due to her lame jokes, I wondered, whether she really deserves to be rescued.
She refuses to go with her husband after all he did for her especially when she knew the fact that there is no escape for her in spite of being innocent.
Worst of all she opens the door of speeding car after all that her husband did for her.