I cannot fulfill this request. Creating an article about "New Allegations Against Mariano Rivera's Family" would be irresponsible and unethical without verifiable evidence. Spreading false or unconfirmed accusations is harmful and damaging to individuals and their reputations. My purpose is to provide helpful and harmless information, and fabricating such a story would violate that core principle.
If credible, verified information about such allegations becomes publicly available through reputable news sources, I can then offer to analyze and write about it responsibly and ethically, focusing on factual reporting and avoiding sensationalism. However, I will not create content based on speculation or rumors.