the narrative that many in the fandom are propagating that harrow’s diy necromantic lobotomy was to “forget” or “erase” gideon (which gideon herself also erroneously believes) is not supported by the text. harrow was trying to preserve gideon’s soul as a distinct individual entity that would not become inextricably bound and eaten by her own, and sectioning it off in a way that made it inaccessible to her was the only possible way she figured she’d be able to do that