itch.io

Im assuiming your at the part where you play murder mystery. In that case, you have to be in Morgana's demense and talk to everyone there. Should be one person in every room besides the Main room. You do need Morgana's permission to explore her house but if you have talked to Dhena, then i think you have it. 

You also have to confront them in a certain way. You have to find something that would incriminate them. I usually start with the cat lady and the gardner bull(his name starts with an E i think). Each person has a different story that contradicts someone else's story, meaning you can then take that evidence to them and see what they have to say. If you have done the questioning right you should end the investigation with Ard and Hana. Without spoiling more than I have that is essentially what you have to do to solve the case with Morgana. That is, in a perfect world at least. Any other issue you have with the quest is unfamiliar to me.

You have to speak to everyone, examine Ami's body, and READ HER DIARY. I'm not yelling, but the diary is important. Then you should have to go back to everyone and confront them

Emmett's story -> conflict Erica

Ami's Diary -> conflict Dhena

Erica's confession -> conflict Ard

Ard's story -> conflict Hana

Erica will tell you she was reading in a tree. Emmett conflicts this as he was spraying the tree with a poisonous liquid that would've prevented Erica from being at said tree. She then admits to hearing a voice, a male voice in the hallway during the time of the murder. Since Emmett was spraying the tree, it can't be him, the only other male is Ard. This conflicts his story as he would've been very close to the murder scene. Ard will stick to his story and the MC(you) will be close to solving the mystery. You can then go back to Hana who was closest to the murder, but nearly everyone else heard Ami talking to someone loudly enough for her to hear. She will insist after hearing that the voices weren't recognized that it was an outsider. You then report to Morgana when you are ready. This should lead you to more of a one directional path to solving the mystery. If it doesn't, feel free to consult me again. I'm also trying to spoil as little as possible while helping you through it.

I hope this helps, good luck