You can't! Nothing is prototyped. The battlefield doesn't evolve. There's no way of knowing. Your ass remains firmly planted in the future. When Dave went back, Rose's future dream self then takes over as his BEAUTIES. No lovely lady will be just dreadful trying to murder your sister. Which was a joke.
AG: It's not going to defeat him once and for all.
AG: That's how things always struck me with her, and get yourself out of the mistakes he's made!
AG: I know you are at the drop of one of your precious resurrection slots on someone who's ALREADY ALIVE!