yeah i have the same issue, can't find how to trigger Lucia events.
Most scenes are locked if you chose not to have sex with her back at the Trenero house. There is a code to force it to change that, dunno if I'm allowed to share it though.
Dude i chose to have sex with lucia at trenero's so how could i trigger some event?
Well I chose to do it back then and still nothing, and no don't share code here