How do I convince my 14 year old very opinionated Daughter that good table manners and etiquette are an important life skill to learn! She insists on either just using her fork, or using the knife in her left hand, making a smacking noise with her lips when eating and if asked to lay the table, puts the knife on the left facing inwards not outwards.
Of course you may think me a pedant, if you think so please feel free to tell me why this isn't important.