She has had a boyfriend for 6 months now and is a little bit irresponsible at times. She's lovely and kind but just doesn't always think things through. She asked me if she could go on the pill because of her periods. I talked to her about it and about being too young to have sex and everything else that comes with it, but then as I thought about it later, I thought that maybe it would be more sensible for her to be on the pill than end up having an unwanted pregnancy. I can't be with her all the time to make sure she doesn't do anything stupid, so would I be unreasonable to agree to letting her go on the pill to be safe?