I checked your savegame (warpath). On Thursday after dinner Lisa talked about it.
When I played it on my playthrough took some time until the lesson actually happened, I think I had to wait for another 10 days or so. I saw you still have a lot of open opportunities. Don's focus on one, just go on with the game and only worry about this one once all the rest is done.
What DID worry me a bit ... when I loaded your savegame I instantly got messages about new opportunities. So I checked your savegame and it was created by game version "0.07.p1.00". Make sure you install the bugfix patch 03,