I just remade these R Movie gifs for a silly reply, but in the process, I noticed something.
In the event you didn’t recognize it, this is from the scene right at the end where the ginzuishou is reforming. Rei and Ami widen their eyes at about the same time. I assume the shot of Minako and Mako are intended to be happening pretty much simultaneously with Rei and Ami. which makes Minako widening her eyes in time with Ami and Rei. The realization of what this could mean hits them all at about the same moment.
But not Mako.
Mako’s eyes widen IMMEDIATELY. In my gif, it’s a good seven frames before Minako reacts. The fact that everyone besides Mako is pretty much on the same page is significant, as is the simple fact that it would be easier for them to animate everyone’s response at an equal pace. They chose to have Mako reacting significantly before everyone else, and that is incredibly beautiful.
Because who would trust and believe in exactly what she’s seeing faster than Mako? Who would instantly embrace what her heart was telling her was true?
Rei would be afraid to believe it, because being wrong would mean opening herself up to the pain all over again. Ami would be caught up in the hows and the whys, instinctively reaching for an explanation first. Minako would be processing all the other things that this could mean, delaying her acceptance of the one thing she wants it to mean most.
Not Mako though. Mako has had her heart ripped out by Usagi’s death as much as anyone else, but even in this darkest moment, Mako sees and doesn’t hesitate to embrace the best possible answer.