Judas trusted in Jehovah but when it came time to prove it, he chose selfishness and materialism.
Same with King Saul, and Hymenaeus too with Alexander his colleague.
Jesus put trust in Jehovah and when it was time to prove it he took it in faith believing that even if he died Jehovah never lies.
The widow of Zarephath put trust in Jehovah that she was ready to brave hunger since Jehovah cannot lie.
Be the latter and not the former. How?
By making sure that Joy, that comfortableness is not a one off affair. Jehovah has given you everything you need to be consistent and rebuild your family.
Will you grab it?
That's when you will really determine if you really trusted.
See, the trials will come. What caused the separation will come again. It's like a parasite feeding on your family happiness. You are the one, you and sister, that will defeat it. Together. With Jehovah. Are you ready? The decisions you make, that statement that caused the separation, the angst, stress, they will come back. When both of you take the decision to make Jehovah win, then you don't have to do anything else.
The organization, the Holy Spirit, the Bible, the elders, the brotherhood and even the angels they want your family to win. See how much help you have.
When you and sister make use of this help you don't need to do anything else. Like Jehoshaphat, just stand still and see Jehovah in action.
But you should be ready to prove your trust. That's your only contribution. We are all cheering you happy you both want to begin the process. Please don't stop and never give up.