Responses
Edith is realistic but not when it comes to transmigration, more in the life aspect and dealing with it the best way possible, a very resilient character.
But there are very few isekai, from what I know, that go in depth about the whole transmigration concept. I wish more authors would explore it. Imagine literally being trapped in a novel, I would go mad.

Hestia is perhaps the most realistic portrayal of a person transmigrating. The psychological aspects, the depression, and the sense of living solely for Kael, without whom Hestia feels she has no purpose in this world