The strategies that the writer uses is imagery and irony. Irony because usually people don't want to feel pain but she does when it comes to the firing of her father's ashes and imagery when she describes how she is going to fire him.
5) Yes the text does accomplish the author's purpose because at the beginning of the text she is struggling with having a relationship because in the surface they are exact opposites. But in later in the text the writer realizes that both her father and her are the same in a deeper level both were smart-alecky loners with goofy projects and weird equipment, she even refers her self as an accomplice of her father.
6) Yes because the way that the author establishes a sense of credibility because she personally lived the experience of struggling to find common ground with her father and by accomplishing her goal by the end of the text. So by her completing her task the reader takes her story more