Yes, if the situation really calls for her to be serious. She's a bit of a swindler and uses charm, where other dragons would use force. She would trick her family and friends, but she wouldn't forsake them in times of dire need.
She sure looks like a sneaky little girl! I love how she 'shines' and her blue skin looks great esspecially with such yellow eyes! I think next to Jade as number one, I think Slither is my number two fav of your baby dragon oc's!
Oh, she isn't mean like that. She wouldn't go out of her way just to make her sister jealous. When she manipulates others she does it to gain something, like food or a nifty trinket. However, if she can use her looks to con someone into giving her an object of her desire, she will.
That actually looks more like slightly overdone eyeliner - which admittedly might be considered a gender signifier in its own right, but I don't think it fits baby dragonesses. Then again, neither do hairs around the eyes...and now I've confused myself. But if that qualifies as eyelashes, Spike has them too, and I don't believe he's supposed to.
Ah well, nevermind. I was just a little confused at not seeing multiple lashes on a non-Asian character of yours - even the adult dragonesses in the "Spike used Adorableness" picture have them. But if you say this counts, then it obviously does. Soldier on.