Fumiko Hori (July 2, 1918-February 5, 2019) was a Japanese artist best known for her paintings in the modern Japanese style of Nihonga.
Biography on Wikipedia: https://en.wikipedia.org/wiki/Fumiko_Hori

Bippu to Chocho [Bip and the Butterfly] illustrated by Fumiko Hori
1956 / Written by Jun’ichi Yoda/ Published by Fukuinkan Shoten

Fumiko Hori on Artnet: http://www.artnet.com/artists/fumiko-hori/

Further reading:
https://artscape.jp/artscape/eng/ht/1803.html
https://www.japanese-painting.com/artist/fumiko_hori/
https://jptca.org/en/publicart500/#visualStage
http://theartroomplant.blogspot.com/2017/01/fumiko-hori-i.html