According to royal commentator and expert Kinsey Schofield, Princess
Eugenie is the only member of the royal family whom Prince Harry can turn to for
support during his exile from the UK.
During an interview with Fox News Digital, Schofield claimed that Prince Charles wishes for his youngest son to attend significant events in his life, and that duty remains a top priority for Prince Harry.
Despite this, Prince Harry may feel somewhat isolated at these events, which is why it's likely that he'll seek the company of friendly and familiar faces such as his cousins Zara Tindall and Princess Eugenie.
In summary, it seems that Princess Eugenie's presence will be particularly important to Prince Harry during his exile, as she will provide him with much-needed comfort and support.