Ad hominem is a common fallacy.
If you have a specific factual objection to any point she made, then state it.
Otherwise, your comment is just hitting below the belt.
Sometimes one naturally judges the thought of others by what one perceives as the very unwise decisions that those others have made in their lives.
I don’t trust the thought and conclusions of anyone who has bought-into ‘Scientology’.
That’s my right, as a free-thinker.
If you see it as an ‘ad hominem’ attack, that’s your right, too.