Responses
Well what you all said is true but a person personality matters on the way of living she reincarnated in a family which made her act childish due to the surroundings around as we know all people are all kinds towards her maybe that's why she feels to act childish because of how people approach her.
Well she began a new life on another world so what's the problem if she acted a child does that matter? at least she knows how to accept her surroundings..
Note: we have different ideas so well say that at that... (=・ω・=)
lmao. for someone who was reincarnated. she sure acts like a kid. usually the characters would have a sense of maturity. but she just acts her reincarnated age. seems more like she has knowledge of earth rather than a reincarnation. ╮( ̄▽ ̄)╭