Brooklyn's medical expenses

As many of you know my daughter Brooklyn has been going through a lot these last couple months regarding heart problems, which also causes her to have seizures. Brooklyn is three years old and has been in and out of the hospital more times than any child should ever have to encounter. It all started when she was 2 months old and her heart quit beating for the first time. Again at 6 months old. 3 years old and again about a month ago. About 6 months ago she was air lifted to the children's hospital in st. Louis where she had surgeries done. The children's hospital put a difibulator in her and the pacemaker. Since then we have been in and out of icu in the hospital. I have had to give her cpr a total of 3 times now. Her most recent episode, I thought I had lost her, we ended up getting air lifted to the children's hospital once again. Staying for about a week we still haven't gotten all the answers to what is actually wrong with her heart. We are headed back down to st Louis for a week from december 4th to the 8th of further testing on her brain and to check and makes sure she has no pressure on her brain. As a single mother I have done all I can to provide her everything she needs, but it's gotten to the point I am having to ask for help. Unfortunately I was informed the testing she has to have done insurance will not cover all of it and I had to pay the hospital a down payment of $3000.00 to make sure she gets the testing and the care she needs. With doing this it has cause a huge financial burden on me, and I am asking for help. I have never been the type of person to go out and ask people for help. But there are times when you just need to pray to God and look at him for answers. My daughter is my rock and I don't know what I would do with out her. Whatever you guys can do to help will be much appreciated and I cannot even begin to express my thankfulness for the Generosity and prayers coming from everyone. Thank you all and God bless.