In theory, if the other side can't outpay you on lawyers, truth should be an absolute defense to allegations of defamation. If you're careful enough not to just

In theory, if the other side can't outpay you on lawyers, truth should be an absolute defense to allegations of defamation. If you're careful enough not to just write "she faked the data" but "based on this evidence ... we believe the data is fake", that should be watertight.