Dark:  
||After moondancer tied and gagged twilight she puts twilight in moondancer’s closet and said I’m sorry for doing this to you twilight then she shuts the door and locked it and went back to do her studying and after that she went to get some sleep and when it was morning spike was knocking on the door outside of her house and she opened her door and spike said where twilight she hasn’t came back last night and monndancer said she don’t know and leave me alone I’m trying to study and she shut her door and locked it and went to her study and spike went off to keep looking for twilight and when moondancer sat on her bed to study and she heard twilight moaning in her gag and moondancer said to twilight that twilight can moan in her gag all she wants she is staying in the closet 3 weeks later moondancer saw outside that spike and rarity pinkie pie fluttershy applejack and rainbow dash where looking for twilight and then moondancer decide to put twilight somewhere that she never be found she went up to the closet and tuck twilight out and tuck her to the everfree forest dumb twilight in the everfree forest and said goodbye and moondancer walk off leaving twilight in the everfree forest all alone and moondancer went back to her house to get back to her study’s and twilight tried to free herself but the ropes where to tight and she tried to reach to ponyvile it was hard because of her wings where tied preventing her to fly to ponyvile she kept trying to reach ponyvile then princess cadence came and saw her sister in law twilight all tied and gagged and went to untie her until the grass came out and started wrapping around cadence and twilight and candence was going to scream when the grass wrapped around her mouth gagging her and then the grass stated pulling them and they tried calling for help but they calls came out only in mmmphmm in there gags as the grass pulled them into a lake and cadence saw twilight being pulled down in the water as she try’s to keep her head above water but the grass pulled her down and they tried to fire themselves before they ran out of air but when cadence look at twilight and saw twilight as ran out of air and then cadence ran out of air and they both died and was never seen again or found and twilight’s friends will never see twilight again cadence will never rule the crystal emperor anymore and that was the end of princess twilight and princess cadence ||

This all could have been avoided, if you just went to that party Twi!

This will end sooooo good!

Totally feels in character for Moondancer.

@Neko Majin C  
Well the idea was like this: Twilight tries to befriend Moondancer. But she has another plan. So she does this to Twilight when she invites her over for a “party”. Nothing really is meant to be “sexual” if you will just “sinister I guess.
 
(yes I’m the guy who commissioned this)

They are not about to engage in coitus, they are playing “Damsel in Distress”. In the next scene, Moondancer puts on a mustache, top hat, and cape and ties Twilight to some railroad tracks.

Moondancer: “Hime-sama, please stay with me. A shut-in has needs.”

Yer gunna love living at my house Twilight. :)

Shh shh if nobody find you here then I will take your place.