Lesa, my prayers go out for you and your sister. If you both have not been to any meetings yet, now might be a great time to start. It would set up other live support for each of you, so that even if one of you changes your mind, the other will have support already in place.
Alanon, Naranon and CoDA are three similar programs that offer support and help working through 12 steps that just might save your life, I know they saved mine.
We're here for you too. Please let us know how this works for you.
Hugs