Medically necessary medical procedure

Hi everyone.  My name is Jazz and I am reaching out to the community to ask for help for my mother. About 5.5 weeks ago, my mother started experiencing symptoms of what we thought was a heart attack and once we got to the hospital was put thru rigorous testing to no avail and was told it was only a panic attack and sent home. However, she would start experiencing this symptoms again multiple times a day. About 4 days later we decided to take her back to hospital due to increasing severity of the symptoms and again was once again told it was a panic attack and sent home with some Xanax.  Well, sure enough the xanax did not work as she was sure it wasn't a panic attack and even if that was an element it certainly wasn't the cause. 4 various doctor's appointments later and we finally went to a dentist and found out that she has a severe mouth infection that has now spread thru her body and is affecting her other systems and organs.  We were told that she needs to get a full mouth extraction of her teeth IMMEDIATELY or else she could die. We asked how much would the procedure be and was told we're looking in the $14, 000 range due to her need to be hospitalized. Long story short, the past 2 weeks have been a battle with the insurance company to attempt to get this procedure covered and at this point is being told that they will cover $5000 of the procedure so that is why I am asking for help with the  rest of the $9,000 portion.  The oral surgeon will NOT do the procedure until we can pay in full before the procedure. My mom is currently on disability and does not have the ability to get that much money up front and is not able to get a loan due to her credit history. I have been helping to cover all the medical cost of all the doctor's visits and the medication she needs to try to fight the infection while waiting for the procedure but am not able to come up with this much money as I am now currently unemployed.  Please if you can help us so that we can get the life-saving procedure my mother needs we all would be forever grateful.