Would you describe the tragic events as a form of “poetic justice” against Victor for his own misdeeds? Why? Or why not?

Frankenstein's aggressive ambition and devotion to the obsession of playing God resulted in his actual creation of a being. The fact that Frankenstein was acting upon impulse and he was no God made his creature as abhorrent as the nature of its creation. However, in an ironic twist, this horrifying monster ended up having more feel of sentiment, intuition, and self-education than Victor himself- to the point that, in the end, Victor declares that he, himself, is "the wretch". For that irony of events, I would say that it is indeed poetic justice. However, I also agree that Victor's family should have not had to suffer the consequences of Victor's deeds.