Medical malpractice cases are extremely complex and filled with trap doors for the unwary. There are many factual issues that are not clear in your description. Moreover, the risk and expense of litigating such cases is extreme. You should consult with an experienced medical malpractice lawyer in the Atlanta area.
I strongly doubt that such a suit would be successful. While you would need to consult a California attorney experienced in governmental liability and legal malpractice, but I strongly suspect they would have qualified good faith immunity. You don't give any actual facts so it is virtually impossible to give a more meaningful response.
Since you do not mention any injury, I assume neither you nor your daughter were hurt. No harm, no foul. Every year I get several inquiries from people who found something amiss in a food item, did not eat it, were not hurt, and yet wanted money just because they were somehow offended or grossed out. The only appropriate response is to report it immediately to the restaurant, let them replace it or give you a coupon, and move on. Life is too short to obsess over something that caused no harm.
You are not responsible for the negligence of your adult son driving someone else's vehicle. If he were driving a vehicle you provided to him as a family member, you could be held liable under the family purpose car doctrine. If you provided a vehicle knowing of his poor driving history, you could be liable under the doctrine of negligent entrustment. If he were on some errand for you, even in someone else's vehicle, you could be liable under the law of agency. But if he was simply driving...
If you have collision or comprehensive coverage on this vehicle and cost of repair exceeds the deductible by a lot, and if policy is worded to allow coverage for this event, then it may be worth turning in. This is controlled by the contract. Your concern about fraud concerns me. You must be completely honest. I would not expect this to have much if any impact on premiums with your good record if you shoot straight.
The testimony by all the ER personnel would be that you were incoherent, combative and had to be restrained for your own protection. Jurors would have to choose between believing you and a whole bunch of medical professionals. How do you honestly see the odds of your success?
Somehow lawyers get the blame for frivolous lawsuits when the real problem is people rushing to look for a lawsuit when things could be worked out amicably.
Without shouting or any snarky attitude (a problem I infer from your use of ALL CAPS), just call back to the prosthetics office and the doctor's office, and politely ask for an appointment to get this properly fitted because you are pretty sure that's not the way they normally handle things.
It appears that the only thing resulting from misdiagnosis of a broken arm was wearing a cast a few days. Google the term "de minimis." No harm, no foul.
If there is liability for the car wreck, and sufficient insurance to cover her damages, the results of medical errors in treatment are encompassed in the damages for the original injury.
Even if the ER missed diagnosing a brain tumor, it is almost 100% certain that the delay in diagnosis made no difference at all in his medical outcome. No harm, no foul, no medical malpractice lawsuit. I can tell you from the experience of a family member, it is extremely common for symptoms from a brain tumor to be initially diagnosed as an ear infection. This sounds like an acoustic neuroma or vestibular schwannoma. If so, ask the neurosurgeon if it is bilateral (both ears), and whether it is...