I think for me, the major issue is the fact the mum wasn't asked. If I were in the same situation I wouldn't have a problem with it, as long as I was asked by the other mum. If I were the mum who fed the other child, it probably wouldn't have crossed my mind (though I'm sure it will now, thanks to this! ), but I would never breastfeed someone else's kid without their consent.

I wonder, in the extreme circumstance that the baby contracted a disease from the breastfeeding non-mother, what rights or actions could the mum take?

I hate the way the article was written, the woman comes across as a total nob. I also think she has left out certain elements of the story to back up her pov.