Thankfully you saved her when she was a child. If it was during her teen years, odds are, the trauma would have taken literal years to decades to undo.
Man, this 10 yo is giving out compliments better than your average grown up manwha ML
The connotations are weird though...does he have the mentality of a kid or a grown up? Granted...he was a pretty childish immature "grown up" in the previous timeline, so...I guess he's still a kid?
I feel like his experience is adult but he's been stuck in the body of a 10yr old and it's excited child brain chemicals are winning--and I'm OK with that development