considering
a. we've only seen her in 4 episode, 2 of which she barely did anything
b. she's only afew months old and is still in development
c. has made no changes to the show as a whole except for breaking an artifact which was fixed moments later.
until we have solid proof that she is developed as a bad character, I'm Switzerland on the whole Flurry Heart mumbo jumbo, but I do have different theories and ideas that I hope Hasbro heads towards that could make her one of the most cleverly made characters in Equestrian history