Southern Charm and The Russians

Politeness is manifested in different ways depending on where we grow up.  My brother and I grew up in the south and were taught to say, "Yes, Ma'am/Sir", "No, Ma'am/Sir".  We were taught to respect our elders, especially while communicating with them.  When we wanted to leave the dinner table we would ask, "May I be excused?".  The following was a common exchange in our house:
Mom-"Sweety, I'm fixin' dinner.  Are y'all going to play?"
Nick (my brother) and I-"Yeah."
Mom-"Yeah, what?"
Us-"Yep."
Mom-"Yep, what???"
Us-"Yes, Ma'am."
Mom-"Thank you."

I discussed the matter with Gina.  I said I wanted our little girl to say, "Yes Ma'am/Sir," like my brother and I did when we were young.  Gina said, "She'll be the only girl in California to say, Yes Ma'am/Sir.  You know that right?"
I was determined to do it.  I wanted to teach her the same thing my parents taught my brother and I.  I couldn't believe it, but she agreed to it. 

Now, I'm not so sure.  I want her to respect her elders but I don't want her to be left our or sound odd because of it.  I have no idea, and now I'm confused.  I have some time to think it over before she starts speaking. 

Yesterday, I had another thought: what if she said, "Yes, Mom/Dad, No Mom/Dad."  It sounds better than, "Yeah," and a little more Californian.  She could also say, "Yes Mama/Papa."  "Yes, Papa?"  What is she, British or from 1823?  There will be no, "Yes, Papa..."  There will also not be a, "Yes, Papi," even though Gina is part Mexican.  "Papi" will be reserved for those who look cool when they say it.  This gringo will be called, Dad. 

The Russians were the smartest when it came to an expression of affirmation: "Da".  Their kids just say, "da".
Mom-"Sweety, I'm fixin' dinner. Are y'all going to play?"
Kid-"Da."