i don't understand the vitriol that people threw at her when she first appeared. she's a baby, of course she cant control her powers and they were unstable. probably when she gets older it will pepper out. and saying she has "no character" is dumb because. HELLO. babies usually don't have fleshed out personalities! she was acting like a cartoon babbeh, lol.
and as they mellow out she figures she wants to be like her father and become a crystal empire knight. as an alicorn she is a force to be reckoned with. takes after her dad with the need to serve and protect. though she can be very silly and rambunctious at times. flurry heart is also known to be cocky and uptight because of her title and upbringing.