There's a lot of "isekai" manga like this out these days isn't there? Three drawings are pretty, but the way the story is told is all narration and it feels lacking.
Also isn't shoujo stuff like this where there isn't any fighting basically just Candy Candy or Lady!!, or Colette? There's no need to make this isekai at all. It would have been perfectly fine, and maybe more personable if the main character really was just a normal, slightly rich girl.