Lately Scientology has been pulverized in books and docuseries by celebrities such as Leah Remini. So the organization badly needs a PR boost. It found it in a very unsurprising place. Last month Tom Cruise’s daughter, Isabella, became the new face for a Scientology recruiting email. She extolled the virtues of the religious group and thanked her dad for “everything.” She recently completed Scientology’s training to become an “auditor,” someone who leads other Scientologists through…