My sincere condolences for your loss.
Unfortunately, this is a very complicated case and it will be difficult to prosecute for a legal malpractice cause of action, the civil lawsuit against healthcare providers for negligence causing illness, injury, or death. (see below). However, you can continue to try contacting attorneys that specialize in this type of law to see if they are willing to at least consult with you on the matter. (Please note, the statute of limitations is only 2 years from the date of the error or omission (see: http://www.mcandl.com/michigan.html), this may create a bar on any civil claim, but please speak with a local attorney regarding the statute as there may be other considerations).
You can report the facilities, and providers, that cared for your daughter to the appropriate authorities. While they will not help you recover money damages, they can investigate the matter and take administrative (or even criminal) enforcement action.
For nursing home (long term care home) abuse: http://www.michigan.gov/som/0,1607,7-192-29943_31467-47538--,00.html
For physician (doctor) negligence: http://www.michigan.gov/lara/0,4601,7-154-72600_72603_73116---,00.html
And for hospitals: https://www.michigan.gov/statelicensesearch/0,4671,7-180-24786-81263--,00.html
Medical malpractice claims are based on expert testimony, this means you, or your attorney, will need to find a medical expert in the same, or similar field, to testify as to the standard of care in the industry, whether your physician or facility's conduct fell below that standard, and whether that negligence was the cause of your injury. The same (or a different) expert can then testify as to your projected future damages and cost of medical care.
Due to the complexity of these claims, I highly recommend that you retain a medical malpractice plaintiff's lawyer (also called trial attorneys). Fortunately the majority of these attorneys will provide you with a free consultation, and many will represent you on a contingency basis (they will advance the costs of litigation and legal services in exchange for a portion of your successful settlement or judgment).
You can find local attorneys using the State and Local Bar Association directories, or private directories such as www.AVVO.com; www.FindLaw.com; or www.Martindale.com (I personally find www.AVVO.com to be the most user friendly).