If DanganRonpa V3: Killing Harmony has the Monokubs' perspective scenes...

Chapter 3: Transfer Student from Beyond the Grave
(before the remaining Ultimate Students enter the Trial Room)

Monophanie: Oh, Monotaro, I was gonna say that Angie was a good student she was trying to resurrect Rantaro which was a good choice. Did we give her that motive?

Monotaro: Yeah, I guess we did...

Monodam: BUT KOREKIYO SAID THAT HE WAS GONNA REVIVE HER, RIGHT?

Monokuma: Hmm... I guess her death must've stopped her from burning the Necronomicon as an instruction on one of its pages.