Sadie,
Sounds like you've had a rough go of it recently. So sorry about your dad, next week will make two years since I lost mine. It leaves a whole in your heart.
So will your kids be visiting with their dad(s) from time to time?
Kids need both a dad (and a mom) and you will need a break from time to time.
Hang in there.
You are loved.
I think many of us ask, "Where did I come from?", "Why am I here?, What is my purpose in life?"... "Where will I go when this life is over?"
Know that there are certain and sure answers to those questions.
God lives and that's the beginning of finding those answers.