Preparing for my death

I am planning for my funeral for the sake of my babies. I am 34 years old and have been diagnosed with stage 4 cancer, which spread from my breast to my liver and a majority of my bones. I now have cancer in my lymph nodes, sternum, ribs, spine, hips, pelvis, and knees. I have two beautiful little girls, ages 5 and 10. I do not come from money, and at this age, I never thought to make plans for my death. I do not have money set back for my funeral, and my family will struggle trying to cover the cost. I am not concerned with having a fancy funeral, what I am concerned with is the welfare of my girls when I pass. My children are my life, my world in its entirety, and I want to make sure they are taken care of when I pass, as I will not be here to do it. My main concern is that when I pass, I do not want the cost of my funeral to be the main focus, I want... I NEED rather, for the main focus to be my girls. I need everyone's full attention on them. To hold them, comfort them, console them, and love them. I will not be here to ensure they have the support they need, and that hurts my heart more than anyone could ever imagine. So, I am asking...pleading, please help me take the financial burden of my death away, so that their emotional needs may be met. Any extra money left after the funeral will go towards their care. Any help would be a blessing. Thank you.