[oh jeez. It seems the hallucinations aren't quite mutually exclusive, so she definitely heard that. She suddenly got very stiff. It even made her bow stand on end!]

...

Mushrooms? But... Len was here! It was real, I could feel him - he killed Yosuke, I punched him so hard the room shook and... ♪

[actually, there's still some blood on her hand. She holds it up]

See! ♪