She's definitely more mature for her age, and it shows when she's with the rest of her members. I think she's only shy when she's in the company of strangers, but when everyone is familiar to her (like her members and Heroes cast mates) her real personality shines through. Tough love is what she subscribes to.
I, for one, thinks she's absolutely gorgeous in strong red. It suits her equally strong, no-nonsense personality.