There's no way to teach a girl not born and raised in the South how to be a Southern Belle... Either you are one or you're not.
However, if I
could teach someone how to be a Southern Belle, my first lesson would be titled, "How To Tell A Person To Go To Hell In Such A Way That They Actually Look Forward To Making The Trip." That's an old saying referring to Irish diplomacy, but it certainly applies to Southern Belles, too. You will NEVER know how a Southern Belle truly feels about you... unless she wants you to. We are very good at hiding displeasure. It's one of the first things our mamas teach us, and is a large part of that social etiquette you mentioned, Sistermadly.