Ohh no!! For that section, the route is to start with Starr, select the 'music' choice (I believe it's that one, I can't remember atm-whichever choice ends abruptly), get kicked out, talk to Sylvia (which cues the line "I have an answer to Starr's riddle") and then select either 'hidden' or 'music' again (since iirc I had the conversation flow continue to the other choice if you got one answer right). If that doesn't work there might be some flag shenanigans that might have passed me by... but that chunk of mishap is a mistake on my part, in retrospect I really should have added additional dialogue to further direct players ;;