When you can find no attorney to take on a medical malpractice/medical negligence case, it is
almost a guarantee that there is no case worth the cost of pursuing. This is not because attorneys are seeking only a handsome payday but, rather, it is more often because they do not have money enough to afford to take on cases for free. Most attorneys are not wealthy, despite their portrayal on TV (which generally will depict large law firm attorneys living large lives) and the ones focused on in the news (which tend to be high-profile cases with high-profile trial attorneys).
That said, nursing home cases, when it can be shown that the minimum standard of care was not met and patients have suffered injury as a result of the poor care received, can be attractive cases for medical malpractice attorneys. Awards of damages against nursing homes and hospitals have been hefty (in the $500,000 to million dollar plus range). These cases include many "bed sore" cases, bed sores of which can indicate negligent care.
Investigations into nursing home abuses and neglect of patients are conducted on a regular basis in every state, and state and federal studies continue to show year after year that many homes fail to provide adequate care. There are many reasons for this, and lack of money for qualified staff is one reason. Lawsuits filed against these entities and their staff members, by patients and their families who have been harmed, are not uncommon.
Here is a link to an older thread on this forum (from 2012) that, although the legal concerns are different, touches on a few of the same issues (bed sores) that you ask about here. I am not sure if you will find it helpful or not.
https://forum.freeadvice.com/medical-health-care-malpractice-72/who-liable-nursing-home-nurse-583710.html
I am sorry to hear about the death of your mother, legalese.