[A Random DphiE]

If you are worried about the "sisterhood" of your organization only in terms of enjoying each other's company, or in regards of being amiable, then I agree you should encourage "sisterhood events" and such, but if you feel the tear between sisters is serious enough to affect your Recruitment, I urge you to call your National and tell them about the situation. They will be more than happy to aid your chapter. SISTERHOOD lies within the core of any organization, and PNM can also feel/see tension between sisters. In order to prevent a potential problem, one has to face the issue, I know it might seem a bit drastic to call your National Office for help, but they honestly know what to do and what steps to take according to each situation. Use your National wisely, they only want their chapters to prosper and will take all the steps necessary to mend any tears your chapter might have.
Good Luck & Keep Me Posted!!
Carolina