This shit is hopelessly BUGGED.
DON'T WASTE YOUR TIME ON IT, guys.
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0.15. 3rd DAY. Afternoon. In the gym.
Check the stats: Energy is 65; Cassandra Hill is 30.
Cassandra Hill was 25. I HAD to edit it to 30 because 25 wasn't enough to trigger the scene. When I played 0.12 I HAD to edit my save in order to trigger the scene and move on into Cassandra's & Matilda's quests. It worked.
Now, I'm playing 0.15 and I edited my save because 25 wasn't enough to trigger the scene (once again). Guess what?