Forgery of notary?:
Sounds like you need a different attorney, and a bail bond agent.  First of all this is enough to bring charges against the attorney, the notary, your mother, and YOU.  

Put all this together and the crime begins with CONSPIRACY!  This violates most state notary laws, attorney responsiblity rules, not to mention fraud, forgery, and fraudlent schemes.  

If you want to correct this situation I would certainly be the first one to speak to the authorities about this. Deeds must be recorded by the state so finding out about this is easy.  The "real" inheritor won't have to look too hard to find out what has happened.  If I were you I would take cover.