If something happens with me today or tomorrow, I have a several peoples whom can I trust. They know my passwords, where I keep it and how to access to my funds. Also they know how exchange it to fiat.
Why not instruct your loved ones to use it? Since withdrawing money from the market usually does not take much time and only requires a little knowledge, they can do it. I never trust others so I will never guide them because the risk is too great and if they are greedy, they will definitely take all your assets. In my opinion you should guide your parents right now or make a detailed video tutorial for them to understand.