what could she have done after Robert left?
OK, she decided not to leave with Robert, because of her family responsibilities.
Now she is left in her dead end married life, with her inconsiderate children. No one seems to know anything about her or want to know anything.
What can she do to keep her life from being emotionally empty after Robert left?
Did everything have to go on as meaninglessly as before for her there on that farm?
Couldn't she have demanded her husband begin to see her as worthy of "courting"? Would he have responded to marriage counselling?
What if she insisted the family, instead of silently feeding their faces like animals at the trough, start having conversation at the dinner table, in which they showed an interest in one another, and were more considerate? (E.g., her daughter having to respect her choice of radio station instead of switching it over without a word, etc.)
Everyone in the family would have benefitted. Instead the husband and children go on oblivious, and the kids end up in lousy marriages anyway, because they never saw their parents model true romantic love and intimacy.
All this seeking after fulfilling marriage and family life actually became a concern of American society beginning in the late mid 1960's, so it wouldn't have been something unheard of, even in Iowa.