The character described in the quote is portrayed as someone who embodies depth and sincerity, standing in contrast to the typical modern girl who may be perceived as insipid or superficial. She possesses a serious and thoughtful demeanor, which is noted as a refreshing quality. This gravitas is appealing and makes her memorable to the speaker.
The admiration expressed suggests that she has a unique charm that is rare in contemporary society. The speaker's struggle to find the right words indicates that her qualities are profound and difficult to encapsulate. Overall, she leaves a strong impression, suggesting that genuine character is treasured over superficial traits.