Hey guys I've got a question regarding surrendering illegal substances and illegal drug paraphernalia to the police. Yesterday I have called the police and I handed them bongs and marijuana in an attempt to get my friend off drugs we had to go to the hospital for a bit over another situation but the end result was no one was a charged with possession as I was surrendereing the stuff to them and they didn't even know about the stuff before I handed it to them. Legally how can they not charge us? Where's in other countries you may even still face penalities and charges for doing this?

Thanks in advanced,

FYI my state is South Australia

Edit: the police were initially called as she lost touch with reality and was deep into a phychotic episode