"My little sister is getting a little-" *click* "Ow- she's getting a little hungry; got any-" *click* "Twily, that hurts. Can you get me some apple fritters or something?"
"YEAH! AWPLE FWITTAS!" [hands over two apple fritters before clumsily grabbing the two bits Armor lays by her hindlegs]
"Thank you so-" *scrrrick* "Oh that smarts. Here you go sweetie... you can stop eating my horn now."
"Mmm..." *sloppy eating sounds*
"Wait a second, you're the great-granddaughter of Ponyville's founder!"
"Yeah! Here comes mommy an' daddy!"
So they are. Listen, I gotta take my baby sister home; it's getting late.
"Alright, we're back! Did you miss us, sweetie? Let's get you back to the hotel and get you ready for bed! I'll even sing your favourite lullaby "
"Looks like you handled yourself well while we were gone. Good on you. We were just making bank over how much cider we sold to the town guard. Looks like I'll have to write a letter to Princess Celestia apologizing for all her hungover guardsmen tomorrow"
[Looks back] "Wait... those are her parents? I don't even... what the fu-." *click* "Argh! I'm going to need more fritters."
Nowhere in MLP canon does it say that Applejack's parents weren't Master Chief and Prophet.