What reason does Madame Pernelle give when she announces her intent to leave Orgon's home in the opening scene of the play, Tartuffe?

In the opening scene of the play, Madame Pernelle announces that she is leaving Orgon's home because she disapproves of the way the other members of the household (except Orgon) shun Tartuffe. She also criticizes her family for engaging in parties, dances, and other social events, which she considers to be immoral behavior. She also tells them that they should listen to Tartuffe's moral pronouncements against them and try to take his advice.