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After a year that has seen Kate Middleton battle cancer and complete chemotherapy, the Princess of Wales has been looking towards faith in order to find inner peace.

Royal biographer Robert Hardman wrote in the updated version of his book, Charles III: New King. New Court. The Inside Story, that Middleton has been turning to religion in recent months, with family friends backing up the claims.

“The Princess, on the other hand, is said to have become rather more interested in questions of faith as a result of her condition,” Hardman wrote in the book. Meanwhile, a church-going friend of the royal family told the biographer, “‘I would say that things are more hopeful there,'” which the writer noted as “further subtle indications of the different outlooks and generational styles of the King and his elder son.”

Middleton’s condition reportedly hasn’t inspired Prince William to seek comfort in religion, though. A source told Hardman that William is “a modern young man” that “gets embarrassed by certain aspects of ceremonial and religion.”

The biographer added that the “Prince’s position, say those in a position to know, is that, when the time comes, he will observe all his constitutional obligations to the Church of England. He will not, however, suddenly become a regular worshipper or feign an enthusiasm for something that he does not feel personally, however bleak the situation.”

Middleton revealed that she completed her chemotherapy treatment in September; the princess, though she has made a few public appearances over the past few months, noted in her cancer update video that “doing what I can to stay cancer free is now my focus. Although I have finished chemotherapy, my path to healing and full recovery is long and I must continue to take each day as it comes. I am however looking forward to being back at work and undertaking a few more public engagements in the coming months when I can.”