Terrible adaptation. Not only was Panamera’s real personality spoiled in the last episode, in this one Arte’s is completely fucked up. She sounds and behaves more like a 4 year old orphan than a 10 year old raised to be a noble. As already stated in this episode, she is in the same situation as Van and while he acts older than his age (isekai yeeeeah) they are both raised as nobles with all the necessary decorum drilled into them since birth.

The personalities in the source are completely flipped, with Van being more silly and Arte being more noble-lady-like. She has low self esteem, yes, because her type of magic let her house to abandon her, but she shows her upbringing behind her timidness born from low self esteem. Without a better way to describe it: the vibes are completely different.