There are some issues with the chat interface so I have switched the format here to make it easier for us to chat. We're not done with this question until you are satisfied, so rest assured, I'll continue to work with you on this and am happy to do so.
As I had stated, I needed the additional info to assist you and I was awaiting that information so that I could assist you further. There's no need to be disappointed with the service, as we had only just begun to work on your question. You and I will get through this and we'll figure things out for you.
You mention that she could be compensated as she has lost her hearing from the hospital administering "that" drug to her. I'll need more background on this in order to help you. I have no idea what treatment she underwent over 50 years ago or what has gone on since. Has she been symptom free until the hearing issue? Has a doctor determined that the treatment she received so long ago caused her hearing loss?
It seems that you may be asking about compensation for possible negligence in relation to the treatment she received. This would have to be proven however, that the treatment she received so long ago was in fact negligent, taking into consideration the practices, knowledge and abilities of the time.
Also, there is a two year statute of limitations on civil suits. This limitation period commences from the time that a claim is discovered. So if this hearing issue only arose last year and someone has determined that the treatment was the cause of this development, then this falls within the limitation period.
Please provide some additional background and we will continue chatting.