She is a rude, faithless and manipulative person. 
She always makes alliances and uses people to get her personal objectives, making her selfish.
Never having truly friends because she won't really feel caring for them. Will manipulate them and betray at the end instead.
She's not kind unless it gives her a benefit, which makes really hard to trust what's a legit kind act becoming from her.
She knows perfectly what she wants and how to get it.