Two things-
One, I don't consider Que in the 'child' age group, but he is routinely refered to as a boy and will hopefully be shown to be rather young in state of mind if I can ever really figure out how to do such things in my writing. But even if he was more of a child, I don't expect him to really get along with anyone, so your assumption would be correct
And, two, on Astralkitsune's posts and Nygenn's criticisms: To add on to what Nygenn said, I do believe that the self hate is feeling as if more retracting from her character than adding, and I agree that this can be helped by showing it more than telling and focusing on positive aspects as well. However, I can understand where you're coming from, as I tend to suffer from a similar idea of self doubt and can confirm that it really does hoard all your thoughts. In addition, I feel that this dark type lowlyness is presented as more of a fact than an emotional crusher of sorts, or at least that's my understanding from what I've read so far, so I'm okay with seeing it a few times every couple posts or so and I think that, as opposed to what I feel Nygenn is implying, it doesn't have to be this grand flaw that should only be told upon at critical moments. However, I do agree that, in general, it wouldn't hurt to focus on more sides of her character, and I wanted to say that if you really want to keep this thread of darkness going, I can confirm that it's a perfectly normal thing to have this chain of thought (in relation to your character) run through your head half of the day: "I'm not worthy, I shouldn't- no, no, no wait... but what if- no, It's alright, I can do this..."