I suppose it’s possible that those Before pictures were taken after a summer spending a lot of time outdoors, and after four years of studying, she really is paler because she doesn’t get out as much. I mean, it’s a thought. I don’t know.
And look at the backgrounds. Some kind of agricultural field versus ivy. Etc.
Pretty likely. There were some Pacific Island cultures that would send the female members of their nobility to “bleaching caves” to keep them from sunlight and, thereby, lighten their skin.