I was out today with a friend, whom I have known all my life. We had a great day and were walking outside and this friend threw her rubbish on the floor. I gave out a shocked, and slightly bossy 'Lorraine' and gave her this kinda look when she did it, and told her I thought only ignorant people did this, but i'm still really quite upset and angry. I thought she was decent. I picked up the wrapper and took it to my bin. I'm about to email her some pics we took today, so should I pop in a few words about how we should care for our planet and how much her actions offended me?