How do I respond when confronted by a person you spoke ill about me to a fault?
What does this sentence mean?
From wikitionary: "'To a fault' is ordinarily used to modify an adjective which describes some desirable or otherwise positive characteristic of a person."
So "spoke ill about me to a fault" sounds like someone's misapprehension of the meaning of "to a fault."
Short answer: Ignore the "to a fault" clause. The writer likely meant:
Assuming it's a 'fused syllepsis' for
a better rephrasing would be