That's terrible. But glad your DD is feeling better. Good reminder for all of us to keep things out of reach and our eyes opened when we are visiting other people's houses.
About paracetamol being left around... OK, I don't want to scare you but...it may seem quite inocuos and it's so widely used that it's easy to ignore how dangerous it is. (a packet will certainly kill a child (or an adult) within a few days, once it has been absorbed you are done unless you manage to get a transplant in a week.
So good idea to go around the houses picking up all that medicines that have strayed out of their place! (I'm going to do the same right now)