My mother applied for citizenship back in September 2011. She got fingerprinted and left the States in October 2011. Then she came back on January 2012 for her first interview which she failed (lack of English skills), and then she came back again on March 2012 for her 2nd interview, but failed for the same reason.
I know it'd be best to stay in States and reapply N-400, get her citizenship and leave, but she is not in a place where she could wait in States for her citizenship at the moment.
So I'm guessing she has two options:
1) Apply for an N-336 hearing, get passed and get it done; or
2) Apply for N-400 again.
To apply for N-336, especially when she failed because of her English skill, how could she prepare for the hearing, and how long would be the processing time?