This story is a sequel to My Brave Pony: The Knight Who Fell From Space
It has been three months since Lightning Dawn and Krysta quite literally fell into Twilight's life, leaving quite an impression on her before departing as swiftly as they had come. In that time, in amongst the hectic life she leads in Ponyville, Twilight has been searching for a way to contact her two lost friends. Finally, she thinks she has found it: the Heart of the World, a legendary being of unknown kind but which, if the tales be true - and when are they now where Twilight and her friends are concerned - had the ability the communicate with other beings across space. If Twilight can find the heart, she might be able to contact Lightning and Krysta, perhaps even help them return to Equestria.
So, with her faithful friends by her side, Twilight sets off on a journey deep into the heart of zebra country, searching for a way into to the bowels of the earth where the Heart of the World is said to dwell. The journey will not be easy: zebra warriors, hidden defences and the malice of the mysterious Raven will dog the steps of Twilight and her companions. But at the end of the journey, at the Heart of the World, Twilight might just find a way to mend her own aching heart.
Okay, this was a very fun story. I am sad to see that no one has commented on it yet, but Twilight's relationship with Lightning was very moving, the humor was good, and the action was very good. Please write the sequel soon!
Another interesting read. I am 99% sure Raven is a future Twilight. There are so many clues that point to it. How she knew Pinkie, how she knew things that would happen to Twilight, specifically how she remembered the donut shop scene, limiting on who it could be, but the big one is her quote from the reprisal of the B.B.B.F.F. song
What frustrated me is that she resorts to all this sneaky, shadowy stuff and hurting ponies, yet she wonders why no one will listen to her. Maybe they might if she explained exactly what she's trying to stop, but she explains squat. I mean, it's not like Twilight's future self has warned her of future events before (see It's about Time)
Also it looks like the two students of Celestia went in different directions after they were 'disposed of'; Sunset went to Jupiter, Dawn went to Saturn, but it seems both sides are searching for Equestria, one for good, one for ill.