problem is not marrying a really “poor” girl.
The problem is cultural/society/enviornmental difference.
Imagine a situation, you are in a fine rest. and have three forks for different types of food, on the other hand she has her hand for every thing, quite embarrassing..
& ..
dude, you are a privileged person, she is not. Her grownup environment is total different then compares to yours - it will be very hard for you to navigate her family & yours being with her.
Their are others way to help too, if you want sawab - don’t just make hell your life and her too.