Enchantress:
Congratulations on starting something new for the ladies of your campus! This is a challenging road (I've been through it myself) but you will be successful if you and the other ladies in your group stick together and keep everything on a positive and respectful level.
As far as not knowing what you can and cannot say at information meetings, you should contact the national organization for clarification. Always use discretion in your interactions, especially if you decide to do an interview with a campus newspaper. Sometimes comments will be taken out of context to make you sound bad.
Your Student Life Director probably told you that you don't have to participate in rush because she/he may have assumed that you didn't want to. This is actually a reasonable assumption, based on the fact that most MCGLOs, LGLOs, BGLOs, etc. do not participate in the same rush as the IFC and Panhellenic Council organizations. If you do want to participate in the same recruitment activities, let it be known. A lot of administrators are still learning about the differences between the various types of GLOs, so she/he may actually think that they are being "sensitive" to your organization's special focus by giving you this option.
Don't let negativity on campus get you down. Keep your head up!