It sounds like you have a strong faith and I love the statement that you are covered in prayer. You are right when you say that your kids will be ok. You are going through a very trying time in your lives right now and you have to do what you have to do. God will protect them.
I think that anything that does not kill you does seem to make you stronger. I often wonder why God allowed this to my baby girl, but one thing that I know for sure is that I could never go back to the way that I used to be. I can never walk by a child in a wheelchair or using a walker and think none of it anymore. I just get teary at the sight. Good days seem so much better and the sun seems brighter although we are going through a time of numbness of heart right now due to recent bad prognosis. I love the imagery that you talked about. I believe that this is biblical. The bible talks about thinking of the good and the lovely and to meditate on these things. I have been trying to think of a day that all the problems taht we have will be gone. You have made great recovery. I cry for those people who don’t have someone to sit at their bedside or rub their feet and believe me there are many.