Subdued and refined heat
That's what I think when I see her in her movies. She is not outwardly flashy glamorous but appears very refined, very classy with slow radiating beauty instead of something that hits you all at once..
Sort of like Audrey Hepburn, Grace Kelly, Gwyneth Paltrow etc.
Her acting skills are decent in most of the movies I've seen her in and definitely has a good future ahead of her.
Good luck to her.