Hi, I've never studied your text before, so I can't give much criticism on your use of evidence.
There are a few overarching problems with your piece:
i) Your writing is too verbose. I feel as though you're using overly-complex and obscure vocabulary just for the sake of using it, and it makes your response seem flooded and way too bombastic. This will make most (sane) examiners cringe, because you're not showing that you can formulate a complex idea using plain English, a skill which you really need to put to action. A further problem with this is that it becomes very difficult for an ordinary reader to digest what you're saying, because it seems like you've gone to a thesaurus for any word you wanted to use and then just vomited out the noun forms.
I'm not saying to remove every single long word, because sometimes they're fitting. However, phrases such as "...juxtaposition is further exemplified through Jimmy’s belligerent" and especially "...consider the dire mental and emotional ramifications as a result of the denial of communication and knowledge of stolen children’s families in such hegemony rampant with sanctimoniousness" are far from being succinct and simply distract from the point you're trying to make. In other words, the writing makes it more difficult for someone to decipher than it needs to be. I have no doubt that you're a strong English student because your use of language is so developed, but I think it is prudent that you try to cut down on this a bit.
ii) You need some more separation of ideas. This is especially true in terms of paragraphing, but I'm not sure if the teacher gave you the task to write just one paragraph or not, so maybe this isn't something you need to work on. That being said, you're jumping from idea to idea quite quickly. For instance, at one point you're talking about Jimmy's self-perception diminishing and then go on and try to draw a link that there is symbolism of tragedy with respect to the stolen generation. In this way, the response becomes even more difficult to follow as you aren't providing an easy line of logic.
iii) Of the many ideas you had, there wasn't much information about the views and values of the author. Saying that the author 'provides insight' on an issue is quite vague, and shows that you're reaching at straws trying to fit the author in. You should try to be more careful incorporating this. However, it's a very good sign that you've not forgone mentioning the author at all, so keep working on it!
Apologies if this comes off as too harsh. I suffered from similar issues in high school English, and unfortunately the first problem I discussed is an issue which too many teachers are reluctant to pick up on, and instead praise. Props to you for putting your work up here for feedback and best of luck in your first assessment.
P.S - 329 words is definitely enough for a paragraph, so it's not incomplete in that sense. Strong text response essays will generally have 3-4 body paragraphs, and you only have so much time in your assessments.
Have a nice day.
edit: fsr your paragraph disappeared, didn't notice that when I wrote this up.