I'm going to tell her it's embarrassing that her mom doesn't speak english
What kind of hardships do they encounter not being able to speak English?
It's their fault they don't dare to go out and earn money. They are so pathetic asking for money from me.
It's not any of your business on what her family's private matters are. You shouldn't be condescending to her mom, as it was her mom who brought her here and raised her to be with you. You need to be more thankful and stay out of her private life, you don't know why she hasn't learned.
I'm just curious to find out why they learn while they are raising their kid in America?
You do seem to an issue with discrimination of sorts. Maybe they have a good reason to not learn yet. I would not jump to conclusions when you just don't know all the facts.