She works very hard and takes her duty very seriously. Princess Anne is another hard worker, she attended 447 UK engagements last year, more than the days in the year! Sounds exhausting.
Sophie, Edward's wife is patron of Childline which is a fantastic charity to give children who've been abused someone to call.
I didn't realise all this until I did a project on UK charities for an exhibition at work some years ago and found out the royal family are patrons of more than 2,000 charities.