I don't think she was being honest there. The fact she lived for years believing she was loved by her mom and the other demons hanging around as friends means she knows what love is and enjoys it like a human. What's happening now is merely both her vengeance being stronger than any strive for love and a natural defence reaction against being betrayed again, so she's actively rejecting any attempts of friendliness and beyond. Of course she's also damaged by the trauma and also by her earlier way of life, but if you compare her to Hans, she's an epitome of a healthy mind...