Help Save Bella's Life

Bella had to be rushed in for an emergency surgery because she would not stop bleeding from her vulva and found out that she had closed pyometra and I also found out that she has a stage 5 out of 6 heart murmur and had to be monitored and was given medicine to stabilize her heart for the emergency surgery. As 2 days went by the doctor's found out that her body was destorying her red blood cells so they did a 500 ML blood transfusion . She's very anemic and dehyrated but they cant raise her IV fluids rate due to her heart murmur , so that they dont flood out her heart due to the medicine that she was taking because she wasn't eating anything ... she vomited several times and now has aspiration peuemonia. They have been reduced to give her injectable medicine to control the vomitting and have had to give her steriods to control her body destroying her red blood cells . Now the bill is about $800 .. I am desperately trying to save my dogs life here. So any help that can help her would be appreciated. Please and Thank You.