Sounds like your organization is having some major growing pains! I strongly suggest that before you do ANYTHING else, you have your e-board call an emergency mandatory meeting. Tell the sisters there will be a sizeable fine if they do not attend (this usually gets attention!). Have a clear agenda to include, for example: what is appropriate behavior in front of prospective members, what type of committment will be expected from each person, etc. You get the idea.

Bottom line, there are issues that need to be discussed immediately. Tell your sisters that you better get your house in order before you invite anyone else into it. I wish you all the best, and remember, it happens to many new organizations.