I have looked around, and the person I can entrust my seed phrase to, and it is safe for me at any time, is my mom. Any other person can have you betray the trust you have in them when they have calculated the amount you held in your custody. How to play a fast run on you to siphon your crypto money before you could be their target.
For my mom, he has the best interest of me in her heart. She won't like to what will cause me pain. She will keep my seed phrase, and won't disclose it to any of my siblings
When people get old enough, they possibly have issues with memory and consciousness so that they will be able doing bad things. Like they don't intend to do this, but they still make it happen and you will pay the cost, not your Mom.
What will you do with your Mom after that?
Nothing and with your love and respect to your Mom, you can not do anything rather than accepting what happened even if is loss and painful.
I trust myself and don't trust any old person to store my wallet backup.