I was Chairman of the local high school for 12 years and in that time I had to attend many lectures on drug abuse. There is a popular belief that Canabis has no lasting effect and it is safe to use. Our goverment made it legal to have the drug if it was for self use only. The truth is the goverment did not want to spend the time and money on the police or the courts dealing with the problem. CANABIS IS NOT SAFE AND IT DOES HAVE A PEMANENT EFFECT if used over a prolonged time. Constant regular use causes serious mood swings and all the other problems that go with them. This young lady is showing these signs at a quite early age. The NHS is very worried about the future cost of dealing with these people in the next ten years by which time the real effects will be all to evident. Dealing with this young person is a very hard thing to do, you must remember that when their behavour is bad they dont know that it is. You have to help the person to see the state they get into before you can get them to accept that they have a real problem. One good way is to video them when they are at there worst without them knowing and then on a good day let them see themself. Hard as it may seem confrontation does not work, you have to try to get them to see themselfs and accept they have a problem if not there is very little you can do. Its all too common for this situation to happen, first thing you need is to get rid of the fella or he will just suck her down. The girl needs help but sometimes you have to accept that you are not able to.