Suggestions by @kylebrd541

Alyvia Alyn Lind

as Carrie Dollanganger in Flowers in the Attic

Score: +1

Ana Mulvoy-Ten

as Catherine Leigh "Cathy" Dollanganger in Flowers in the Attic

Score: +4

Annabelle Wallis

as Corrine Dollanganger in Flowers in the Attic

Score: -4

Ellen Burstyn

as Olivia Foxworth in Flowers in the Attic

Score: +3

Maika Harper

as Sedna in Mermaids

Score: +1

Li Bingbing

as Jiāorén in Mermaids

Score: +1

Jamie Loy

as Ne Hwas in Mermaids

Score: +2

Mila Kunis

as Rusalka in Mermaids

Score: +2

Rose McIver

as Marakihau in Mermaids

Score: 0

Morena Baccarin

as Iara in Mermaids

Score: 0

Lupita Nyong'o

as Mami Wata in Mermaids

Score: +2

Evanna Lynch

as Selkie in Mermaids

Score: +6

Emilie de Ravin

as Yawk-Yawk in Mermaids

Score: +1

Diane Kruger

as Lorelei in Mermaids

Score: +2

Katerina Geronikolou

as Ceto in Mermaids

Score: +2

Auliʻi Cravalho

as Ala-Muki in Mermaids

Score: +1

Larissa Albuquerque

as Iemanjá in Mermaids

Score: 0

Cosma Shiva Hagen

as Undine in Mermaids

Score: +1

Dina Hayek

as Atargatis in Mermaids

Score: +1

Mélanie Laurent

as Melusine in Mermaids

Score: 0