Thank you for advice (I have managed to get my previous identity back!!)
I just feel SO sorry for her. She thought he was "the one". Says she still loves him but can't trust him. He is trying to cut back by half a tablet a day but it's obviously going to take ages. And he obviously has a very addictive personality. I have never taken to him, although I did admire him as I thought he had kicked the habit successfully. All I can do I suppose is to be a listening ear and try to encourage her to leave him without actually saying the words. I just wish she was nearer.