Yes, I think you are right to feel how you do. My advice to you would be to pull her aside for a "little chit-chat" about her behaivors. And then maybe try to teach her what it really means to be a member. You seem like a good role model, so maybe you could straighten her out. You never know, she might turn out to be one of your best memebers.
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Once in every lifetime, you'll know what life is. Oh I need you, you need me, oh my darling, don't you see? The Young Ones. Darling we're The Young Ones. The Young Ones. Shouldn't be afraid! To live. To love. There's a song to be sung. 'Cause we may not be The Young Ones for very long!!!