I have given adult panadol to my children, but again I am also a nurse so feel quite comfortable doing so. OP I don't like the fact that someone is possibly giving your child any medication without your say so. Maybe next time she looks after your child put a bottle of baby panadol in the nappy bag JIC so she is not tempted to use adult panadol. I would also tell her you want to be notified if medication is required before giving it