I suppose it has it’s risks. However, who better than a Calvanist to tell someone they are not representing the Calvanist point? In the Defending Catholicism thread, you replied to Zerinus that you wanted to make sure that Historical Confessional Reformed theology “did not get misrepresented”. This is very important, since I think you are the only one on the thread representing this position.
In like manner, we are all called to “judge rightly”. This is not the same as judging a persons heart with God. It is judging the content of the post, and evaluating it against what the Church teaches. The Church’s duty is to teach the faith, and it is our duty to hold fast to it. We need to recognize when we, or someone else, is not in unity with the One Faith passed on to us by the Apostles. This is what it means to test everything, and hold fast to what is true.
Tweety has made it plain that she rejects a significant number of core Catholic doctrine. These elements are not “optional” for Catholics. If one rejects them, then one rejects the Catholic faith.
As I have said before, though, I can only go on what is posted. For all I know, she is role playing, and does not believe a word of what she writes!