Giveusabreak: I agree that she is much more of a bfing advocate than many other of the hollywood types. She is Mexican - but a very privileged Mexican before she ever came to hollywood.
In Mexico, a lot of racism exists. The more 'indigena' you are, the lower down the social (and racial) ladder you are. The foundation of Mexico is European types coming to save the indigena from eternal damnation. It is another version of the Great White Hope story.
I loved that she can put another child to her breast which is not her. the blackness and africanness of the child is beside the point. I wonder how this story would have played in the US if she had gone on a humanitarian mission to Lousiana or Mississippi in the aftermath of Hurricane Katrina and did the same for an American baby - white one preferably. Babies died because of that crisis because they were not breastfed.