[Girls drop on Gruntt]

I'm playing on the invaded kingdom stage right now, where you battle Gruntt. In previous stages, I usually would spend about 100-150 or so combativity to roll out all 3 girls. I've spent way over that amount on Gruntt now, no girls are being dropped. Is this a bug, or am I just super unlucky?

[Girls' Upgrade photos]

So when the girls' are upgraded after reaching a certain affection level, there's a scene that pops up right? Is there a way to re-access those scenes at all? .-.