"I don’t need your power. In the thirty years since Ponyville vanished off the face of the Earth, we’ve harnessed new forms of power far beyond yours. A single one of our ships uses more magic than both of you combined. With that power we’ve visited a dozen star systems, colonised two of them, made new friends, and started the process of bringing a dead world to life. Now, I’m here to offer everypony back home the opportunity to join us in that grand endeavour. Would you deny them that chance?"
Twilight: You girls jelly? Luna: Wow! I can't believe you put- Celestia: Twilight? Where the money came from for building your extravagant lunar isolation? T: I got a supporter who was willing to spend a lot of money into this project. L: A supporter? Who's fortune gone into t- C: Sorry sister for interrupting you... L: Humph! C: ... but... what project are you talking about Twilight? You never mentioned any of this in the visit! T: Of course I did. C: No. You only mentioned that it was a base and that you planned to.... Oh. T: See? I would not lie to my mentor and friend. L: What about me? T: You're my friend too, of course. L: I mean, my duty is to raise and set the moon. How much this will affect the moon? T: Uh..... umm... I never thought about this... L: WHAT?!?! You made your calculations for all your machines and other stuff and forget about me? T: Uh.... geez. I'm sorry Luna.... L: No enough apologies will suffice for calming my- C: Calm down Luna. It is already done. L: CALMING DOWN?!? Did you see what she done to my beloved moon? MY beloved moon?!? T: Uh... W-want to take a ride in the ship to visit Pluto? L: No! I don't want to visit Pluto! I want my moon back as it was!!! C: Right. And who still finance all this? You? T: Uh... *nervous laugh* You see... C: You better talk now Twilight. I will find out anyway. L: And you better give me MY part. It's my moon after all! T: Oh boy...
Celestia: WOW, what a lovely ship. You two really have done good work while I was... Gone.
Luna: You fooled around with my Moon Base and and luanched the first pony ship in 9,0000 years without even asking for clearance! You called it the "E.E.F Best Princess"! Thats one of my oldest Royal Titles you jerk, one picked out by my first wife on the day we came back from our wedding!
And we agreed to name it the "M.S.E.F (Multi. Species. Exploration. Fleet) Solar Mare" after my beloved sister when I thought she was as dead as Gods can get!
Twilight: Um, I already knew its oldest Royal Titles so its gift for...
Luna: THATS ITTTTT! I'm moving in with my wife and giving her a lovely bit of make-up rut! Queen Chrysalis is best wife and you Twilight Larkle are best jerk!
Luna storms off in terrifying anger, as Celestia is very puzzled but thinks this is a good time to put on her dreaded "I'm disappointed and hurt by what you've done" face.
As Luna fades out of sight, Twi says: I already knew its oldest Royal Titles and that it apiles to both of you so its gift for both sisters. To thank you both for all you've taught me and our long-time friendship, and Luna its also to celebrate your sister's return.
Celestia: Um, Twilight I'm still here.
Twilight: Oh right... Heh heh heh. I'll go talk to her after Chrysalis and her have some fun, and my co-ruler clams down.