Additional funds for hospital bills

Our Mother had an attack last 28th of March telling us that she can't breathe and we immediately rushed her to the hospital. After arriving they informed us that she will need to have an angioplasty, upon hearing this the whole family had agreed to have a 2nd opinion first as we could not afford the surgery, 2nd doctor findings was also the same.

Upon undergoing the angiogram procedure they have found out that there are already 3 veins that is almost non functioning which is also causing her chest pains in the past.

She has been well after the operation and is ready to be discharged last 6th of April, however the funds we have gathered are still not able to pay the bills fully and still won't let us out unless we have paid fully in cash we wanted to get her out as soon as possible as it is increasing up the payable the longer she stays.

Thank you all in advance!