When doing the Sandral-Matale Feud quest, go to the Sandral home first when you have permission to investigate the disappearance of Shen Matale from the Jedi Council. Take the necessary steps to enter the home. After questioning Nurik Sandral, he will depart to the back of his home. That is when Rahasia Sandral shows up and asks you for help. Deny helping her free Shen, she will be upset. After denying her, go back to her and select to Apologize. After you apologize to her, she will continue with what help she needs, but deny helping her again instead of hearing her story. The apology earns you a Light side point. You can repeat this as many times as desired in order to accumulate high Light status.
Also, when speaking to the hologram on Kashyyk, you have the opportunity to earn both Dark and Light side points. You should answer the questions like a certain person, but there is an opportunity to comment about how you really feel and create a shift.