That's a horrible thing for anyone to go through.
Are they going to have a necropsy done?
Only things I can think of is to ask about what the anti-biotic was and how was it injected. Just in case it was supposed to be intramuscular but when your friend injected they either hit a vein or went through to the body cavity or internal organ ( not as far fetched as you think with a tiny 09).
Only other question is what temp was the water she used for soaking?
dr del