From your description she is still alive and a resident of AZ? You need to contact an attorney in Arizona to begin guardianship proceedings so you can handle her affairs. (Unless she has a power of attorney naming an agent in the event of her incapacity, which I assume she doesn't have or you would not be asking).
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Your mother can sign a power of attorney atv the hospital if she is competent.
If not-you will need to start a guardianship proceeding.
The answer given does not imply that an attorney-client relationship has been established and your best course of action is to have legal representation in this matter.
You need a little patience in this situation. Hopefully, your mother will regain consciousness and then, assuming she is competent, you can get her to complete durable or general powers if necessary. Until then your only option is to institute guardian or conservatorship proceeding in AZ. That being said -- you do not need permission to make rental, mortgage, or insurance payments on her behalf and you should do so if you are financially able until appointment.
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