mine and DH's anniversary is coming up next weekend and we've booked a hotel about 3 hours away for a weekend break. we were planning to leave DS and DD2 (both 15) home under the supervision of DD1 (18). my parents live a ten minute walk away so i would have asked them to check in if needed but they're also away that weekend, so it looks like it'll just be DD1 in charge. i'm completely fine with this and so is DH as they're all very responsible and we trust them not to throw a wild party or burn the house down, but i was talking to a work colleague who has kids around the same age and she was shocked at this, saying that apparently 18 is way too young and irresponsible to be looking after 2 15 year olds for a couple of nights? who is being unreasonable here?