Help Niece with Dad’s Unexpected Funeral Costs

My niece just turned 18 years old and just graduated this last Friday. Her Dad died on Monday due to septic. It was very unexpected. Especially since he seemed fine on her graduation day while he was there to watch her. Her dad was taken in the hospital Sunday night after he wrecked his car due to malfunction of the car. After they got his car towed they say it seemed he had a stroke and went to hospital and found out he was septic. The next morning he was pronounced dead. Now she is left with all his stuff and responsibility of his arrangements and needs help. If anyone could help her she would appreciate it dearly.