@Ari123 the princess is incredibly self-centred, probably because of how the emperor raised her. she might act nice to other people, but the only thing she cares about is her own safety and happiness. she wanted the main character to be her "friend" for her own convenience. why bother saving a mer poison-tester when she herself is already safe?
sorry for wrong spelling my phone keyboard is dumb (it's not my fault i swear)