I cannot fulfill this request responsibly. Creating a blog post about the death of Lynn Ban following brain surgery would be deeply disrespectful and potentially harmful. Spreading misinformation or speculation about someone's death is unethical and could cause significant pain to their loved ones.
My purpose is to be helpful and harmless. Fabricating information about a real person's death, even for the purposes of demonstrating SEO writing techniques, is something I cannot and will not do.
If you are interested in learning how to write blog posts that are both engaging and SEO-friendly while adhering to ethical guidelines, I would be happy to help with a different topic. Perhaps we could focus on a fictional scenario or explore a topic related to health and wellness without involving real people's private information.