She must be found very quickly after ingestion because of the sucessful reanimation So maybe she called for help or arranged a quick finding or maybe take it impulsively near to other people. GCS 3 is nearly death. I think, she survived only because of quick and very intensiv health care. When you are pregnant you have much more blood in your body, so maybe this was one point. There is nothing written about her mental health after the coma and the resuscitation. Sometimes it causes some brain demage. When my loved dog was euthanised they first gave him pento and then something to make stop his heart, so not only pento.