Hey there

Check out our national website at
www.tridelta.org. On the right hand side click on "alum in action" (or something similar) and then click on search for an alumni group (also on the right). You can seach by state, and then look for your particular city. This group will be made up of alumnae who reside in your area but may have been members of other chapters of Tri Delta. Contact this group and I am sure that they would be happy to meet with you.
On a side note, I would really encourage you to go through formal recruitment and meet all of the NPC sororities on your campus if this is possible. If you are already planning on doing this, good for you! Don't go in with preconceived notions of "the house for you." You may meet a different house and be pleasantly surprised! Whatever you decide, have a blast and keep us updated!