I admire your strength at this time of trajedy in your life. I admire the strength of the love you have for your daughter and how the past has taught you to do better instead of just giving up.
Sometimes that's how we get through is just putting one foot in front of the other one hour at a time.
I agree with Bram that maybe the job change should wait. But it depends where you feel you will get support, compasion and fulfillment, well, and of course the paycheck.
Wishing things will get easier for you. Keep us informed when you have time.