How do the scenes flow between Act 2 Scenes 7 and 8? What does this represent symbolically?

It's important to note the flow of action throughout this section, particularly between Scenes 7 and 8. Stage directions indicate that after Madden leaves, Gabe immediately appears; in other words, the action continues. It may be that this transition is intended to represent Diana's experience of how events are flowing one into the other in her damaged, traumatized mind.