Make sure you have a plan in place so your loved ones are set up for success and never be in this type of situation.
The plan was not just made like a part of the investment strategy but for us to seriously follow. A plan that is also quite achieving. Like what happens in your family, it needs the total participation of the members of the family to make fair decisions. Having a good relationship and proper communication could help a lot in the success of the plan, which I hope would happen to you, OP.
What I was trying to convey is that investing in secrets can be extremely challenging. Many people died with some investments, but nobody from their family got the benefit of it because of no access. It is time to realize that we have to change this kind of strategy and make everyone in our family aware.