Such issue would not invalidate the POA as long as executed in accordance with PA law (where she resided). The error would be considered scrivener issue and substantively, the courts of PA would apply PA law and as long as the execution complied with PA law then it would be valid instrument..
My answer is not intended to be giving legal advice and this topic can be a complex area where the advice of a licensed attorney in your State should be obtained. Please click "helpful" or "best answer" if my answer added any value or add a "comment" if you have more info for me to help you get a better answer.
I agree with my colleague. If it was properly executed, it is valid. She can revoke the prior one and grant a new one if there is capacity... if she has the legal and mental capacity to do so. Good luck!
Answer given for general advice and is not a legal opinion, which would require an analysis of the facts and circumstances as well as the applicable law and regulations.
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