It sounds like you have hit a few bumps in the road right now. Please don't worry about the things that you cannot control, just the things that you can. I truly am sorry that your sister isn't doing well. And that you are having difficulty with your car and with moving. Try to take things one day at a time.
I know that you are a person of strong faith. Just keep trying, everything will work out the way that it should.
You are in my thoughts and prayers,