I'm A Stressed out Mom please help?

Sounds like you have three perfectly normal teenagers. You should be proud of your daughter for standing up for what she believes in - a LOT of people smoke pot (which is a natural, organic herb by the way) and many people believe it does open up the mind. Unfortunately being the parent of a teenager they are going to start making their own choices - it is of course your job to offer your opinions and guide them in the right direction, but ultimately they will do what they want to do. Lighten up a little bit and do some research on pot - real research, not the BS the government wants you to believe. Watch this movie (free on Netflix, and Youtube) "The Union: The Business Behind Getting High" with all your teens and relax a little bit. If your other daughter is gay - again there's nothing you can do about it. Just be a supportive mom so your kids don't hate you in a few years.