Screaming in side and no idea what to do!

I got a call from my mother today... My mother fell again on a knee she broke last year and just got over and had fixed. And she just called again and she broke her knee and her just below her hip too this time.. And when she called me she asked me to come to get or come down there to her she is all alone and does not know what to do she has been working in a different state and my dad is back home and they can't afford for him to take off or they will not be able to make rent. I have a overwhelming feeling of sadness, anger, helpless and not knowing what to do. I have 2 kids one in 3 grade(and can't take him out for a week) and the other is 4 and we just don't have the money for me to go there too her. I feel like shit for not be able to help her I am an only child and already live this far away too. What the hell do I do you know....... :(