When a doctor doctors a doctor, does the doctor doing the doctoring doctor as the doctor being doctored wants to be doctored or does the doctor doing the doctoring doctor as he wants to doctor?

A long one this week...

Betty Botter had some butter, “But,” she said, “this butter's bitter. If I bake this bitter butter, it would make my batter bitter. But a bit of better butter – that would make my batter better.”
So she bought a bit of butter, better than her bitter butter, and she baked it in her batter, and the batter was not bitter. So 'twas better Betty Botter bought a bit of better butter.