One Word for this Woman

A man comes back from work at night and heads straight to the bedroom to make love to his wife.
He got into the blanket and they made a quick
one.
When he is done, he goes to the kitchen only to find his wife looking for something in the fridge.
He asks his wife how she quickly made it to the kitchen when they've just made love.
Alarmed, his wife says "that was my mother in the bedroom, she was tired when she arrived so I let her sleep in our room."

Wife runs to her
mother and ask why she didn't say something.
Mother replies and says "you know me and your husband don't speak to each other and I wasn't
going to start today!"
ONE WORD FOR THE WOMAN ???