However, there is a well-known Swedish author named Anna Wahlgren who has written extensively on parenting and child development.
She is famous for her book "Barnaboken" (The Child Book), which advocates for a more natural and intuitive approach to parenting. She also wrote other books like:
* "Barnen som ingen ville ha" (The Children No One Wanted)
* "Barnens frihet" (Children's Freedom)
* "Lilla barnaboken" (The Little Child Book)
It's possible you are thinking of Anna Wahlgren and have misremembered her last name as "Feldt".
Could you please clarify your request? If you are interested in learning more about Anna Wahlgren's work, I'd be happy to provide you with more information.