Funeral costs for my sisters fiance

My sisters fiance worked for kdot and on the morning of January 19th he passed away while plowing snow and treating icy roads. His plow rolled down an embankment. He was only 25 years old, and him and my sister had a 1 year old son together and he took good care of my sisters other 2 boys. This was very unexpected and my sister needs help with funeral expenses and money to help support thier son and her other children. He was an amazing man with a heart of gold who loved my sister and the kids so much.