Hire legal counsel with probate experience. You can certainly challenge if PA actions were reasonable and in the ward's best interests.
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The Public Administrator's attorney is in court all the time and is an expert in all areas of probate and administration practice. Between the PA and the PA's attorney, the fees can be a great burden on the estate. You need a very good lawyer who is a regular in the surrogate's court where the estate is being administered in order to take on the PA or better, get the PA to do the job without running up more fees for a litigation. You absolutely can't do it yourself.
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