Services, memorial, burial, and help for kids

Our sister passed away suddenly leaving behind an 8 year old boy, a 5 year old boy, and a 10 day old little girl. My sister's and I are looking at getting donations or anything to help out with the services or the kids. Prayers are always appreciated if you can't help out. Thank you in advance for everything. Our sister was a very good mother to her kids, a loving sister, and a very good friend. She always loved to have a good time with family and friends.