Without knowing more, it is really hard to say. If she had mental capacity, she could have executed a POA during her stay in the hospital. Being in ICU does not preclude signing legal documents although it is obviously less than ideal. It is also possible that she changed her mind. There is no way of knowing, at this point. I would simply stay close and do what you can. Once she stabilizes, the doctors will look to HER for all consents, and she can determine what role you will have, if any.
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Attorney Frederick is correct. As long as your friend had the mental capacity to sign a new Power of Attorney, she could have done so. Indeed, it appears that the hospital received a copy of the same since they no longer provided you with information or the ability to make medical decisions for your friend. Your best bet, as Attorney Frederick noted, is to keep tabs on the situation and try to be helpful. Good luck to you.
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If your friend was competant, then you friend could sign a new POA. This would likely be phrased to invalidate any prior POA's. Your obligation to your friend is complete.
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