She is not an indifferent person, she has just experienced too many things and knows how to maintain a normal mind.
She is not a heartless person, but she is not interested in helping others if they are able to get up on their own.
To her, they are not so-called princes
They are just passers-by who happen to live in the same country and meet within a certain period of time.
The heroine has a ridiculous identity and is involved with the princes...