You need to mark a set of buttons that are shared by past and future if I recall correctly.
Thanks but now I'm stuck at the trap. How do I release Erica?
That one is pleasantly tricky :). If you try to play with buttons a bit, you will discover that she can't actually reach the panel in horizontal position. You need to uplift her and "throw down", so one of her hand is higher. And I am not gonna lie, the last phase demands fast reflexes.