If you only read the literary descriptions of all three female roles, where did the reasoning about Inara's usefulness come from, even before you had any evidence? What specifically don't you like about the solution? How do you suggest identifying the culprit if not based on evidence? And what should I have been doing during the day, in your opinion, instead of "listlessly analyzing the evidence"? Listlessly analyzing the psychology?
Because it's incorrect, because I'm not the culprit.
And how are they usually identified? Most often, it's based on a combination of factors, such as alibi, the result of the investigation, daytime behavior, and evidence. I have nothing except the ten-step evidence, which is one of many pieces of evidence pointing to different people, and the lack of usefulness during the day. I didn't play the previous game, but I know from snippets that you failed to identify Arandor during the day based on evidence, and maybe that caused someone to feel guilty. If I'm wrongly accused today, you will clearly see that it's not working, even with a good piece of evidence. There is no perfect way to cheat, dismiss all possible points of analysis, and identify the culprit quickly in this game situation.