@Background Pony #5899  
I know that. It was an alternate ending.

@Background Pony #EBFE  
They were teaching her how to be an even better friend, not telling her that she was a bad one.

@Background Pony #EBFE  
Couldn’t have said it better myself.

@DarkStars  
Twilight: But… we were just trying to…  
Rainbow Dash: Tell me I’m a bad friend? Fine. You can find somepony else to be the element of loyalty. Who’d wannna be friends with somepony like me anyway? It’s not like I’ll listen anyway. You don’t have to worry about me pulling a prank on anypony anymore… because I’m leaving Ponyville.. forever.  
She flies off.  
Twilight: No! Wait!  
Pinkie Pie: Guys… I think we really popped the pinata this time.

Tries to figure out what their all staring at. Realizes he’s on the wrong side of the screen
 
O_O!!!

“It was at this moment, the citizens of Ponyville realized….They fucked up”

@bigladiesman
 
Gotta check that out. It reminds me a lot of Turnabout Storm, a great fan-made case.
 
@Background Pony #1E6E  

 
….s-senzu bean?

Great job guys, she screamed until she suffocated to death

@raw19  
Phoenix Wright: Prankster Lawsuits.
 
or if you lived the 90s
 
Rainbow Dash’s Ass-suing Simulator: Sweet Revenge Edition.

@bigladiesman
 
I’d totally buy that game.

Moments later, in Tokyo, or Los Angeles or wherever…
 

 
“No, Maya, I still don’t have a clue about what’s going on, and yes, Maya, the defendants’ faces were the same as yours when I appeared in that barn. In their equine way, I presume… But those so-called bits are solid gold, so we’re taking the case”.