She is Baigong's heir, but the murder case happened 12 years ago. If she confess her identity to ML she can clear…
She doesn't trust easily and I think she can be called cold-blooded to a certain degree. It's about survival and profit to her. In the previous ep, she said she protected Qi Min because she considers him family. That's a clear line drawn that she doesn't consider ML to be one.
I find the relationship between the princess and Qi Min to be interesting. She wants a playmate, someone who will be by her side and devoted to her only. He understands this as seen in the way he doesn't get very angry and tolerates her. Really curious how they will end up