EDIT - NVM - As soon as I posted a random convo triggered in Megan's bedroom where she commented on the time MC spends with Susan, I have now had the progression to supplying wine to further to convo with Susan so it seems that was all that was needed.
Can anyone help me figure out what to do with Susan? The hint says to talk to her at night on the weekend, I drug the husband and talk to her, she has the same convo line about her youth, ending with MC's inner thoughts, saying he must drug the husband to continue and this repeats Fri/Sat/Sun and even on weekdays. I'm not sure what I can do to trigger the event, so any help would be appreciated.