I'm sorry that this is happening and that you are too young to do anything about it. I will say this; your parents are the most irresponsible pet owners I've heard of in a while. They have no business having ANY animals if they can't even afford to buy a new diaper for the dog. I know you're young and that you are on this board seeking help. Good for you, you can break this chain of HORRIBLE animal care when you grow up.

Your dog needs to go to the vet. The puppies and the mother will most likely die. I know that your family doesn't have the money. I suggest spending time with your dog. Without vet care theses are probably her last days. Also, please do not ask for another dog until your parents are prepared to care for it properly.

I'm sorry if this is blunt, but these are not little toys, these are living animals with feelings and you should know this. Again, I know this is not your fault, but it is your parents fault.