a first person point of view, Parks's perspective of events, personal emotions and facts
A memoir is a true story about a specific moment or event in the author's life. It is a form of biography. Because a memoir is the author writing about him or herself, memoirs are always in first person point of view, written from the author's perspective, and contain personal emotions and facts. In this passage, we see first person point of view and her perspective when the author uses "I" statements. We also see personal emotions and facts when she talks about her lack of intentions.
The answer is before because after a quotation you put the period befkre adding the quotation marks
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It is foreshadowed that Susan is at a zenith, a highpoint in her life. This, however seems to be the last highpoint that she will ever be at, insinuating that the rest of her life was much more depressing and less exciting.