Queen Elizabeth II no longer has her closest adviser, Prince Philip, by her side.

But a royal expert believes that, if he were still here today, the Queen's late husband would have important advice following her health scare this week. She spent a night in hospital after cancelling a trip to Northern Ireland.

Prince Philip would urge The Queen to slow down: Expert

Royal expert Angela Levin says Prince Philip would tell the Queen to "relax a bit" after she was hospitalized and told to "rest." Observers fear the Queen is too devoted to work and not to her health now at age 95.

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Please watch the video above for more on Prince Philip's likely advice for the Queen if he were here during her new health concerns.