However, i don't think you need to show anyone that you are getting returns from your BTC investment, that is not even a safe approach to take, you can even expose yourself to a $5 wrench attack if you do that, always keep your financial wins to yourself and maybe your family.
I'm not saying you should show them how many bitcoins you hold or how much money you made from your investment. There is no need to go into such details , instead I believe that anyone who improves their financial situation can easily see it through the way they spend and live their daily life . I don't believe that if you make a large amount of money from your investments a, you won't buy a house , or a car, and your family won't change their daily living standards...That should be enough to show them the benefits of investing in bitcoin and how it can change your life .