I can agree that Panam’s temper is hard. She is not kind of girls who are quiet, wordless and uninitiated. She can’t sit and do nothing. Her misfortune is she never had person who can be really close to her, she had no chance to tell about her feelings, experiences, fears and desires.
She has always been nomad. That’s why her main concern was always clan, family and It’s safe and future. She resigned herself to the thought that she was not destined to meet someone who can be not partner or family member but friend. She had no time for her feelings, probably she almost forgot about them, that’s why first meeting with Panam showed her as rude and daring girl.
The thing is rudeness and boldness is her reaction to the loneliness in NC. That’s why Panam’s trust is hard to get. Yes, V had to help her with Nash. Yes, if wasn’t included in their agreement, but this V’s action was a sign for Panam. The sign she can trust someone not from her clan. And Saul rescuing and Basilisk mission gave her hope for her happiness.
That’s why Panam wanted to return her debt to V and help him whatever it takes. V gave Panam hope and Panam did the same to him in Star ending as well.