I would say the author uses irony in this passage that remembering his mother makes him not happy but miserable which may be the opposite of what is expected but he would rather suffer this than be happy in forgetting her as this latter feeling would be expected to make him sad.
Answer: Ann Radcliffe helps to define what makes a Gothic novel and enjoys massive commercial success.
In her best-known novel, The Mysteries of Udolpho, Radcliffe introduces ‘the explained supernatural’, a technique by which terrifying, apparently supernatural incidents have a logical explanation. Over the course of her previous novels, Radcliffe developed the formula of ‘the female Gothic’, first introduced in The Recess by Sophia Lee. The formula is perfected in Udolpho, and has since become a Gothic norm
Explanation:
read it then go back look through the story and find your answer good luck