Try bringing a pillow in your purse to put on your shoulder...Just kidding.

As a marksmanship instructor in the Marine Corps, I dealt with this problem alot, yes even with an m-16 which has almost no recoil. Our first solution was additional time "snapping in." Dry firing the rifle while concentrating on bone structure (stable stance), squeezing the trigger during your natural breathing pause, andsteady even pressure to the rear, etc...

The latter being the most important in my opinion. A flinch is almost always causedby anticipating the round firing. Forget about the recoil, pain is temporary. Try concentrating on your sight picture and slow, steady, even pressure of the trigger to the rear...theround firing should come as a surprise.
Slow steady even pressure to the rear, don't pull the trigger, squeeze it slowly, don't hold your breath,maintain sight picture,BANG! Nice Shot! This almost always corrected the problem.
-Phil