I agree with you, it’s better to spread about bitcoin in your family because they can trust you and believe you immediately rather than other people because they know you personally and maybe they see how you will work to earn bitcoin and they are curious about it. And it will be easy for them to ask you a question if ever they not understand how it wors.
And yes, at first you received a lot of questions and criticisms for them in what you are doing because they are not knowledgeable how you earn bitcoin and how it work. It’s better to share with them your wallet because you know you can trust them and they will see how much you earn in bitcoin and also you can trust them to not do anything bad for it.