Am just interested in views on this - at what age did you start leaving your teens overnight? We might get a little weekend break sometime in the summer and we were thinking of leaving 17 year old daughter home alone. She is completely happy and comfortable to be left. Sensible. Can cook for herself etc. We would only be a couple of hours away at most and her grandma is only 20 mins away in case of emergency. Would you leave her? She will only just be 17.