It is not too late to Consult with experienced attorneys.

If you are fearful, discuss it with the attorney and consider hiring a new attorney.

Yes the attorney should. It may be time to find a new attorney.

The estate can sue her. Consult with experienced attorneys. Use the Avvo search tool to find an attorney. https://www.avvo.com/find-a-lawyer

This is an issue between the opposing attorney and the opposing party unless the fees were written off prior to the request for payment.

Get a hearing date on calendar to comply and have warrant recalled.

You may have a case against the law firm or estate of the attorney.

They may have to sue, or you sue them, to get all the documents.

Review the court file, first, then Consult with experienced attorneys.

Take the checks to the bank they are drawn on.