She mislead the publisher by promoting her book as her completely true autobiography. That's fraud!  The publisher accepted the book based on the fact it was a true to life autobiography, not a work of complete fiction.

The Publisher has every right to take legal action against her to recover the money they gave her for the book. And IMHO so does everyone who bought the book.

"It is good to see ourselves as others see us. Try as we may, we are never
able to know ourselves fully as we are, especially the evil side of us.
This we can do only if we are not angry with our critics but will take in good
heart whatever they might have to say." - Ghandi