Artist's description of the image:

ミーナ「.....あなた..誰？！」　 ？？？「隊長ひどいですわ～んふふ」

Maybe if it was translated, then the image would make a bit more sense?

I think it speaks for itself.

Now thats what I call a growth spurt

ミーナ「.....あなた..誰？！」　 ？？？「隊長ひどいですわ～んふふ」

Minna: "Who are you?"
???: "You're mean, commanding officer. Heh heh!"