The issue is not whether another woman's milk is better than formula.
The issue is not about wet-nursing, when mothers willingly pass their babies around to each other to share feedings in a supportive envronment.
The issue is not about bodily fluids.
The issue is about consent and knowledge and bonding with your baby.
Although many of us are experienced breastfeeders by now, try to remember back to those early days of new-motherhood, with your first baby. Try to remember how nervous you were, how important early bonding was, how much you hoped and worried and dreamed about this baby, but had no actual experience.
And then try to imagine how you would feel when you couldn't find your baby in the nursery. Try to imagine how shocking it would be to see another woman nursing your baby, WITHOUT YOUR CONSENT. And then, you realize you need to put the baby to your breast to ensure you stimulate adequate milk production, and YOUR BABY WONT NURSE!!! because another woman has already nursed him! And try to imagine how much that early experience would affect your early bonding with your baby, how you'd feel that this was 'stolen' from you, and your ability to bond with your baby is compromised because all you can think about is that another woman gave him milk when it should have come from you! And even once your worries about this woman's health are assuaged, there's still an incredible amount of anxiety associated with the entire experience of nursing your baby.
The article doesn't seem to indicate if she stopped nursing or continued (i guess I assumed she continued), but I am sure it has been a difficult experience for this mom.
Sure, i am a fan of wet-nursing, donor milk, etc. But that's not the issue here.
Let's give this mom a break and see how awful this experience has been for her. it shouldn't have happened to her and she feels it every time she thinks about her baby's birth.