Let me rephrase: they didn't have to make a character literally do nothing at all in conversations for the first *long* stretch of your time knowing them, except condescend, insult, belittle, demean and insinuate inferiority upon the player character, just to illustrate that she was an evil aligned character. If they felt they needed to do that to show she was evil, well that's just abominably bad writing. They chose to do that on their own. They said "Hey, let's make this character insult abuse and belittle the character just for talking to them, and make them ramp it up if they try to learn anything about them", and then they said "Let's make it even better, by setting them up to be the first character you run into after the intro, that's sure to leave players feeling good about playing our game".
Does that make her unlikable, okay, perhaps not: if you secretly enjoy or get off on being abused and belittled by people you're supposed to be relying on in dangerous situations, then by all means. Most people don't. It doesn't *matter* how deep or compelling her story supposedly is, or how much reason and motivation she supposedly has for acting that way; I've no interest in putting myself through that kind of behaviour to find out, because when I do, it still won't justify or excuse the behaviour.
She is not like this because she is "evil". She is like this because this is how she was raised, also because she is thrown in an unfamiliar situation and doesn't know how to deal with it. The game maybe should do a better job of explaining this.
Just like in real life, different cultures come across strangely to someone not exposed to them, once you take the time to understand that culture then everything makes sense. Stressed out people will snap at others and act in much more negative ways, this is expected considering most people do not have experience in regulating or suppressing their emotions.
