Maybe, but it seems like everyone was pushing work onto her.
Not exactly. Her family pushed every kind of roles onto her as "the bare minimum a saintess would do". And her every success increased the expectations, making them add to her workload again. I'm not sure if they intended to break her with overwork from the beginning or it became the goal later on, but the people of the country didn't ask her to do all of this until it just became her usual routine.
She never knew what exactly the work of a saintess is, so she just took whatever she was told as truth.
Plus the first chapter says a lot of people were resentful because she took their jobs.
I mentioned them (the second line you quoted from me), but they seemed to be a minority.
Because she wasn't doing
everybody's work, only the work of a few professionals. And as it looks, she took the work that they couldn't (or couldn't be bothered to) do in the first place. So, the complaints were mostly from people who were upset that she made them look bad or useless.
This is shown later as some of the work she used to do was not picked up by others. Even in her absence, those people were too busy
not working to pick up their own roles again. They just expected the younger sister to pick up those tasks herself, underlining the hypocrisy of their former complaints.
nice, teach these greedy fools the meaning of misery.
