Help bury my step son's mother

My step son's mother who was 36 years of age had brain tumor, sadly passed away in her sleep on 10-6-17 she was set for Surgery on the 5th but didn't get there on time and was re-schedule on the 18th of October. She went to hospital again Bc she was low on meds they could of done an emergency surgery but didn't they sent her home heavily sedated ; they could of held her that night to monitor but Failed she would still be Alive today with her loved ones by her side. She has just given birth to her 3rd child in August. She is survived by her 3-children, David-17, Litzy-12 and Dwyane 2-months. I would like to give her a proper burial so her children can be at peace. PLEASE HELP; it would mean a lot especially for her children. Thank You, Jessi Revas