nobody is rejoicing at her writings. We (irrespective of personal religious beliefs) are saying that and only that if you do not agree with her, just engage in a civilized debate, or an educated dialogue. Do not throw books at her as in hyderabad, or do not hound her out of a city as in Kolkata. Same applies to Fida Hussain and his saraswati paintings though. Same applies to Dan Brown and Da Vinci code.
There is no Hindu vs Muslim vs Christian fight. The fight is between fundamentalists and sanity.