A: If the home is in his name alone then it is going to pass to his heirs after the probate process is completed. That means it is going to go to his blood line according to the NC intestate statute. In this case it will go to his/their children but if they are under 18 then their mom will most likely be in control of the property until they reach the age of majority. It can be more complicated if there are debts in the deceased's estate so I would consult an estate administration attorney for a definite answer.
A: If your mother inherited the home after your grandmother passes then that was hers to sell and the proceeds were hers to distribute or keep as she saw fit.
Once your mother passed anything in her name goes according to her will instead of your grandmother’s will.
A: Any documents that need to be submitted to the clerk have to be originals, meaning the documents have to have the original signatures.
Copies or scans will not satisfy that requirement. If they are out of state then they will also need a resident processing agent.
Its best to get an estate administration attorney to help with your specific eatate matter.