Try put emotions on Moe in the last chapter was kinda forced because her personality was change in favor to be hardcore and then comeback to be emotional to point to cry or react when a girl say ''I love you'' is not convince
But I think is that what we get in a orgy scenary
Given she became emotionless because she thought that specific girl would never love her, I can imagine it would be a shock to Moe to hear that she actually did. It makes sense that she'd be shaken out of her depression and start showing emotion again.
Personally I think this was Mira's strongest multi-chapter story, above Earth Girls and Sun, Sea and You.