Considering she can teleport, the possibility, nay, the inevitably that she will accidently find herself somewhere she would rather not be, is pretty much a forgone conclusion.
Imagine if the trolls from the previous generations where introduced as a alien advanced tech warmongering race.
The pony-vers version of Star Treks Klingons.
And using Tech to cancel Magic would be a great counter to pony powers.
War Tech Trolls versus Magical Ponies.
Ahhhh. The Possibilities.