"Mother" Shaun is your daughter, not your son. 1.0.0

"Father" is now "Mother"

Mother's looks are still dependent on the looks of your characters, and your installed textures, and other mods. Your Mother will not look like mine.

Mine is using the mod "Genetical Father", and the last screenshot shows her mother, who is created from my preset found here:

 https://www.nexusmods.com/fallout4/mods/42905

Also consider using female X6-88, alternate version refers to Shaun as "Mother" and female pronouns for this mod.

The extra file (2KB) can replace mother.esp if you want the 10 year old Shaun and Synth to be female.