[smokin5]

Sounds like a question involving breach of fiduciary duty on the part of your aunt (abusing her Power of Attorney for her own gain), but those sort of cases CAN get tricky & expensive. On the bright side, the general rule of law is that a fiduciary has the burden of proving she did NOT breach her duty if she in fact receives benefit from the transactions. As stated by others, you should consult a local attorney.
Best advice I can give you without getting into all the facts.