our babysitter has let us down. We were supposed to be at a wedding reception in London in a few weeks. To get there involves a 40 min train journey. I'm looking for a new babysitter but our 14 yr old is 'really embarrassed' and thinks she should be able to babysit. But it's a long time to leave her in charge and I'm not sure. Is 14 too young to babysit?