What’s wrong with following the Earth Queen in Esrolia?
Being pious and devout? That’s one thing. But you still have duties – to your family, to your Grandmother. And if a woman is to devote herself to the Goddess fully, like the priestess in the last panel? Well, that makes certain other duties rather hard to do.
And Samastina’s Grandmother, she has ideas on what her granddaughter is supposed to be doing and not doing, and becoming a holy person isn’t part of the plan, it seems.