Sona has a way of controlling people, literally. Her music creates such a trance, especially when directed at one person, that she is able to take control of them for a period of time. This is incredibly beneficial when she wants to get her way, though it has also landed her into some tricky relationship troubles! She's still learning when it is and isn't appropriate to use mind control - and that friends and family should be off limits.
Sona's naughty and demanding personality makes her want to be the center of attention at all times. She's always the pup climbing on top of her siblings so she can be seen best. She gets jealous very easily, especially when she hears people praising others' musical talents. One can only hope as she matures, she will start to be a little more sharing of attention.
She's not all bad, either. Despite being rather bold when around her family, she loses a lot of that outgoing nature when she's in unfamiliar places around unfamiliar people. Blind in one eye, she can be rather jumpy when approached on her right side. When there aren't tons of siblings to compete with for attention, and she's just one on one with someone, her demeanor changes entirely. She has a much easier time focusing and thinking of others than herself when there's not so much going on. She is probably far more of an introvert feigning extroversion as a way to cope with insecurities about herself that she tends to lose when she's with one person she really trusts.