This appears to be a follow-up to your other question. You still have a very complex situation and there is really no way to answer your questions without being able review your documents in detail. I would strongly encourage you to meet with a probate attorney to get some guidance on how to proceed.
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You mention a Will and a Trust. While a Will can have a Trust in it, that will come into being once the Decedent's bills are paid, the Will has to be filed with the Register of Wills. By contrast, someone create a Trust that is either independent of a Will or where the assets passing under the Will pour over to the Trust. You need to have an attorney review both documents if there are two different documents. If a Trust does exist, you are normally entitled to petition the court for review of documents, an accounting....but whether the Trustee has to release money depends on the precise wording of the Trust.
If the Will was not signed, then the Will should have no effect and would be void in PA.