Grandmother Molly Weasley and her granddaughter Molly II

In canon, we know nothing about the personalities of the Weasley grandchildren of the next generation. We only know their names.

Here's a suggestion. I wanted her to have the same build as Molly, but I couldn't.

Molly II Weasley, named after her paternal grandmother, the famous Mother Molly Weasley, honors her grandmother by embodying her most Hufflepuff sides. Endowed with a protective, strong, and energetic character, she is loyal, patient... and, as Percy's daughter, a hard worker. With a strong temperament, she also demonstrates some leadership abilities, great family loyalty, and a certain courage. The intellect her parents instilled in her shouldn't be overlooked; after all, she receives the education one would expect from Percy.