Estate Law Questions? Ask an Estate Lawyer.
Hi and welcome to JA. I am Ray and will be the expert helping you tonight.I am so sorry for your situation here.
You would need a local PA lawyer here to file a civil suit against the sister.The lawyer can seek a court order here for an accounting here and then judgment for any misspent funds.
The lawyer may use a CPA or other expert to review the records and see what misspent funds are involved.You really are going to need a lawyer to force discovery for all that has transpired.
The sister here had a fiduciary duty to not misspend funds and self deal here.She can be removed as POA and held accountable for all of this through the courts.
You can locate a trust/probate lawyer here.
If your dad deceases here the estate can still pursue this matter.
I appreciate the chance to help you tonight.Please let me know if you have more followup.Thanks again.