I also posted this in the Sigma Kappa forum...maybe this will help.
Cristinasmile, I think some of the confusion is lying in the fact that that you are calling Sigma Kappa Epsilon Pi a local sorority, yet you want to use Sigma Kappa's history, their colors, and new member manual. To many people, that sounds like you are developing an interest group to become a local chapter of Sigma Kappa.
While I'm sure that the Sigma Kappas are very flattered that you admire them so much (after all, who wouldn't be? ), if you are truly looking to establish a local sorority with no intention of affiliating with any NPC sorority, it is not in good form to appropriate Sigma Kappa's history, colors, mascot, symbols, or ask to use their new member manual.
You are starting on a wonderful new adventure--creating a new local sorority! Why don't you take all the things which you admire about Sigma Kappa and use it as a springboard to create something totally new, different, and unique? Good luck to you in your endeavors!