Yes, and hard work DID get her out of poverty.
The poverty issue is related to work. Very few people who work full time are in poverty. That is a statistical fact.
Working full time is working full time. That means 40 hours a week whether that's landscaping, ditch digging, or working at McDonalds. If you work full time, you won't be in poverty. It gets more complicated if you have dependents. My mom only had 1 dependent and she didn't have additional children that she couldn't afford.
I don't know how many actual poor people you've met but I've NEVER met a single poor person that worked full time or didn't have multiple dependents. I have little sympathy for an able bodied man or woman who cranks out children he or she can't afford. Nor do I have sympathy for the able bodied man or woman who simply doesn't work full time but cries poverty.
What makes the United States special is that your efforts can lift you as high as your talent can take you. There's nothing holding an able bodied person down but their own stupidity or laziness.