I suppose so, but if it were from anyone but her, it would be rather infantilizing.

[And considering her true age, Mikumo would fight them about that. Makina is safe because she is Makina, and Reina is an extension of the other girl so she is safe as well. Everyone else would be in serious trouble.]

So, it's the type of story with a moral and catchy music so you can't forget it? Hm. Interesting.