Do not get close in team fights in a line - she will make your whole team dance!
She is very squishy at early level. Try to coordinate an assault against Sona as soon as possible.
Her Q hit doesn't target you if she don't have you in sight, so hiding in a bush is a good way to bring down her harass.
She gives very good overall utility and harass, but the spells cost a lot. Force her to spam them early in the game, then make a trade when she is low on mana.
