Can Kate Winthrop use the clue gained from when a gate would spawn on her space for Dimension Study's reaction to that same gate being discarded?
I played it that she can.
1. Gate would spawn on her space.
2. She discards it with her ability and completes the effect (Gain 1 clue).
2. The window for 'gate discarded' is still open, she spends the Clue for dimensional study.
That's what I think