There have been historical allegations and speculations about the nature of Sigmund Freud's relationship with his daughter Anna Freud, a prominent psychoanalyst in her own right. However, there is no concrete evidence to suggest that their relationship was professionally or personally inappropriate in the way you described.
It is true that Sigmund Freud had a complex and influential relationship with his daughter Anna. He was a significant figure in her professional development, and she became a prominent psychoanalyst, following in her father's footsteps. Some critics have raised concerns about potential bias or interference due to their familial connection, but others argue that Anna Freud's work stands on its own merits.
Regarding the issue of psychoanalyzing family members, Freud did indeed express caution against the practice. In his writings, he acknowledged that psychoanalysis should ideally not be conducted with family members, as it could potentially lead to conflicts of interest or compromised therapeutic boundaries.
While there might have been moments of tension and disagreements within the Freud family, there is no solid evidence supporting the claim of an inappropriate relationship between Sigmund Freud and his daughter Anna, particularly in the context you mentioned. As with historical figures, it is essential to approach such claims with critical thinking and rely on well-documented, reliable sources when forming opinions about their lives and relationships.