What are Sombra's and Radiant Hope's True Destinies?

So I've read issue #45 of My Little Pony: Friendship is Magic and I have to say, I'm impressed with how thick the plot has gotten thus far. Now that we know how Hope has lived for so long and the reasons for her action, I can see this going one of two ways: one is that everything she has said about the umbra is the truth, in which case things are about to get really complicated. The other is that she has been tricked, and Sombra finally defies his evil destiney for her sake, proving that even the most villianous of ponies can have some good in them.