Life insurance beneficiary verses will and power of attorney?

A female friend married for 29 years, now separated and diagnosed with bone cancer. Everyone is after her life insurance. The other day, her uncle paid for attorney fees and rushed her to have her sign a will and full power of attorney. She is gullible and trusted the uncle believing he was protecting her but now regrets signing. Unknowing to her, everything is now in the uncles name, the one she trusted most. He is now the executor of estate and it mentions his name in the will as the beneficiary of her life insurance even though she had someone else appointed on the policy. In the state of Alabama, what should she do? Can he change her insurance beneficiary? Should she acquire her own attorney with a new will and power of attorney to protect her interest? Should she file for divorce or should she wait for her husband to file? Is her SSI check safe from the uncle with full power of attorney? This is an awful mess and looking for any sound advice. Thank you,,,flip