If you put in this womans name in the google news search facility every article seems to end with the line 'The International La Leche League promotes breast feeding but says it discourages women from nursing another woman's child because viruses can be transmitted through breast milk.'
Whilst the risk is, I agree, tiny, there is non the less a risk. Disease may not have been the issue in this particular case, but surely it must be an issue as general rule over breastfeeding others, with or without consent. Not every pregnant woman takes the HIV test, its not compulsory, it is possible to carry on as normal, not taking any precautions with your own child or others.
I agree that this woman was probably just daft not to think that it mattered whether or not the mother approved of such action. And I think that the charge itself is ridiculous, but I don't think that the fact that this woman placed a body part into another person and exchanged body fluids with no consent can go without some kind of action. Surely the fact that the baby is ok is a matter of luck, not because the woman felt that everything was ok. As I said not everyone gets tested for HIV, especially in the USA where even having the test can severely effect future medical insurance.
I think that in litigation happy USA its very strange that this woman, a lawyer, decided to take such action...