You know, I think it's the first time the time traveling fl is not a social outcast. Janya knows proper etiquette, is rich, has pedigree, fashionable (for the art), has friends, a good reputation, outgoing, loved by her family and she's not sickly. Her only weakness seems to be that she didn't pay much attention to the staff before, so they were more loyal to Angela. She's the perfect aristocrat, if she doesn't let Angela manipulate her, Angela will never succeed.
Basically, I'm saying the fl has no obstacles to overcome, we're just reading about a perfect woman (seriously, her only flaw was being too nice lol) bullying a powerless but ambitious girl.
Not that I'm complaining lol