If Marjorie needs to prove that she did not exert undue influence over Joseph, she might consider producing the following types of evidence:

  1. Communication Records: Any emails, text messages, letters, or other forms of communication that demonstrate a normal, pressure-free interaction regarding the matter in question.
  2. Witness Testimony: Statements from individuals who were aware of the relationship and interactions between Marjorie and Joseph. These witnesses could attest to the nature of their relationship and any relevant conversations or decisions.
  3. Legal or Financial Advice Records: Proof that Joseph had independent legal or financial advice before making decisions. This could demonstrate that he made informed choices without Marjorie’s interference.
  4. Video or Audio Recordings: If available, recordings of conversations between Marjorie and Joseph that show a lack of pressure or coercion.
  5. Documentary Evidence of Independent Decision-Making: Any documents that illustrate Joseph making decisions independently, especially those related to the issue at hand.
  6. Medical or Psychological Evaluations: If applicable, assessments of Joseph’s mental capacity or susceptibility to influence at the time the decisions were made.
  7. History of Past Decisions: Evidence showing that Joseph has made similar decisions in the past, independently and without undue influence from Marjorie or others.
  8. Expert Testimony: Professionals in psychology, law, or gerontology could provide context about Joseph’s ability to make decisions and what undue influence might look like in this scenario.
  9. Details of the Relationship: Information on the dynamics of Marjorie and Joseph’s relationship that supports the idea of mutual respect and absence of manipulation.
  10. Character References: Statements from people who know Marjorie, attesting to her character and indicating that exerting undue influence is inconsistent with her behavior.

The key for Marjorie would be to provide a comprehensive picture that convincingly shows that her interactions with Joseph were free of coercion, manipulation, or undue pressure. Each case is unique, and the type of evidence required can vary greatly depending on the specific circumstances and legal standards of the jurisdiction.