My PC is extremely light and first encountered Visas on the next planet to Telos (for me it was Dxun after finished Onderon). After fighting and tell her the I will not kill her, then have ONLY ONE CONVERSATION, then gain influence 2 times, then leave the Ebon Hawk. When I look at Visas character profile, she was right st the top of the alignment sale (i.e. extremely light).
I happened to know that your influence on characters can affect the alignment, but I don't think it would be that fast. I meant, after the very first conversation. Even after 5 conversations with Mandalore, he is still dark, and Kreia is still Neutral. The handmaiden is slightly light as she was when left Telos.
But a very light Visas, how come? Anyone have any idea?