What Causes Impaired Joint Movements?

Hi ! I'm from Rajasthan, India...

My Question is-

My Aunty's daughter can't move, stand or run. She do work Like a slow robot.. Her bone joint movement is well but she can't able to move her bone like a normal human. She move her finger slowly-slowly, and Can't able to catch anthing...

I consult to the doctor, he told that her heart is not work well...

What is the exist problems..

and What to do next...

Please help me sir...