El Roto,
I think the flat MSH could help you with your grip since you have small hands. I would say to give it a try. Another possibility is to also try some of the slim grip panels. If you don't already have a beaver tail grip safety, I would go for this too, and get the undercut where the forestrap meets the trigger guard. All of this mods will make the pistol sit deeper in your hand, especially one of the beavertails like the Brown. You will be surprised how it will change the geometry of the grip.
I think the flat MSH could help you with your grip since you have small hands. I would say to give it a try. Another possibility is to also try some of the slim grip panels. If you don't already have a beaver tail grip safety, I would go for this too, and get the undercut where the forestrap meets the trigger guard. All of this mods will make the pistol sit deeper in your hand, especially one of the beavertails like the Brown. You will be surprised how it will change the geometry of the grip.