That saint is a little oblivious, I mean her maid is being poisoned as part of her job, a job she got by being raised and sold like livestock by the very same church she wants to return to. Yes as saint she gets much better treatment, but does she not know her maid could have been so called "fostered" into a rich family where she would be forced to have sex just like the saint? Expect it would be a pervert that would treat the maid like disposable trash instead of a precious bird in a golden cage like the saints treatment by the king. I would want me freedom too, but complaining to her maid that she doesn't belong there, but does the maid belong there? As I said oblivious.
BTW if I was that maid I'd never write back to the church. It's not like the church has power to do something to her now that she's in the palace. Best not get herself killed by casting unnecessary suspicion on herself.