Hi BohdiSaurus, by the age of 16 yes, ideally they should be regularly helping out. To my way of thinking, by then they should have been taught about doing some set chores round the house (we are a family, it isnt just down to your father and me to do housework, yada yada) from around the age of 11 or 12, lets say at least by secondary school age (before that, it is probably a bit hit and miss
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Do you mean your DSD has reached the ripe old age of 16 and hasnt gone through that process? That's a difficult change to make, she may be resistant, but it isnt impossible. Could you chat to DP to see if he would be willing for a short list of chores to be put on the fridge and agree who does what (on a rotating basis if that works for your family to swap things around).
The only other thing of course is that, at 16, they are into GCSEs so the amount of homework, coursework, revision is much greater, so we have been cutting my DSS a bit of slack but he normally does drying up, keeping his room tidy and bringing his washing through from his bedroom.
Tbh, help from a teenager isnt likely to make a huge difference, its more about them realising parents /SPs aren't there for their convenience waiting on them hand and foot