London ( CNN ) -- The Duchess of Cambridge has successfully graduated as a `` fully fledged member '' of Britain 's monarchy after fulfilling all her objectives one year on from her marriage to Prince William , a senior royal source has told CNN . St. James 's Palace , which represents her , William and his brother Harry , now regards Kate 's `` induction '' as complete and the duchess herself feels `` fulfilled '' by the achievements of the past 12 months , the source said . Confirmation of her smooth transition into the ranks of royalty will help dispel fears voiced ahead of last year 's wedding that commoner-born Kate would struggle with the pressure of being thrust into the public eye . But , thanks to guidance from her husband , Kate feels she has settled into her new life , CNN has learned . `` She would never judge her achievements but she has succeeded in doing what she set out to do in her first year , '' the source said . `` She has achieved her objectives . '' Kate 's other mentor has been her father-in-law , Prince Charles , with whom she has become close . `` They spend a lot of time together . They go on visits to the opera and art galleries . They share passions that neither of the princes share . They get on very well . '' Gallery : Photographer 's year with duchess . The source was speaking to CNN for a new documentary : The Royals ; Kate , Duchess of Cambridge airing on May 4 . In it , CNN explores how the whole royal family has thrown its support behind their newest member as she finds her feet . `` The queen has made a lot of time for the duchess . [ Kate ] gets on very well with the queen . They have a warm relationship as was evidenced in Leicester , '' says the source , referring to a visit last March when the pair were seen chatting and smiling . It has been a whirlwind year for Kate . Her wedding last April , one the biggest media events in history , was followed by a triumphant tour of Canada , which she regards as the highlight of her official year , and a trip to the United States . Watch : The Royals : Kate , Duchess of Cambridge . When the duchess returned to Britain , she began shaping her own identity within the royal family . In January , she announced her support for four charities and began her first solo engagements . Last month she made her inaugural speech with the help of William who , CNN has learned , coached her via phone from the Falklands where he was on military service . By delivering her first speech , Kate completed the full range of official duties expected of a working royal . A small palace team has provided what training it can for the duchess , but they accept that the best insight comes from William and Charles . However , Kate has also proved to be a natural . `` For her , the public engagements are a joy , '' the royal source said . `` She enjoys it . Not much fazes her . She is confident enough to handle it . She is strong-willed . She knows her mind . She is professional . '' Kate 's hands-on approach came to light when the media was bombarding the palace with calls demanding to know the name of her new puppy . The duchess was unwilling to let her puppy become a public relations event , CNN understands . Instead she revealed it naturally during a visit to a school when a student asked her . In case you missed it , the newest member of the royal family is called Lupo .
Palace source tells CNN that Kate feels `` fulfilled '' by her achievements over the past 12 months . William and other royals have helped smooth her transition into the monarchy , source says . William phoned Kate from the Falklands to coach her for her first public address . Kate intervened to prevent her new puppy Lupo becoming a public relations event .