It's sad when families become fractured, and even sadder when those fractures continue throughout life. It happens, however; it even happened to families in the Bible (including that of King David).
Should you try to do anything? Certainly! After all, if you don't try, you'll never know if any healing was possible, and you'll always look back with regret. Don't let fear of failure or rejection keep you from making the effort. You may even find that your sisters (or at least some of them) have the same feelings of regret that you now have. The Bible says, "Let us therefore make every effort to do what leads to peace and to mutual edification" (Romans 14:19).
What can you do? One step might be to contact the sister who's just gone through cancer. Let her know your concern, and assure her of your prayers and good will in the future. You might then write your other sisters, telling them about this conversation.
Don't expect too much at first, but if it's appropriate, let them know you're sorry you haven't been in touch. If you need to ask their forgiveness for anything, have the courage to do so. At the same time, avoid dredging up the past or arguing about things that no longer matter. Above all, pray for your sisters (and for yourself), that Christ will turn their hearts and minds to Himself and His love, and to Heaven.