Is my old woman's understanding very poor? Sometimes when talking to her, she has different ideas and is prone to misunderstanding. She was born in the countryside and can't read now.

This is normal, because everyone uses their past patterns and experiences to understand what others say. As the saying goes, the speaker has no intention, and the listener has a heart. That's what it means.

It is precisely because of her poor model in the past that she should communicate patiently and make her meaning clear. Only about 70% of what a person expresses is heard by others, and how much this 70% can be understood is still a question mark. After all, when you are older, you are more likely to be confused and easily substituted into the old model.

When the old man is old, he doesn't expect her to change much. He can only be more tolerant and considerate. She didn't mean to, but she did it anyway. Accept this model and understand that it's not your fault, it's her fault, not personal. Understanding will make you more tolerant.