Your request got my curiosity going and I searched for a bit. It is difficult to find any recipes without dairy products in them. Here are a couple I found. The second one calls for combining and reducing in a saucepan, so I am not sure if it will make ahead and travel well. I hope these help your families celebration of life.

Orange Marmalade and Horseradish
1 cup Dickerson orange marmalade with zest
1 teaspoon prepared horseradish
To taste Tabasco sauce

Blend all of the ingredients in a bowl. Refrigerate until needed.

Mimosa Dressing:
1/4 cup honey
1/3 cup orange juice concentrate
2 tablespoons champagne vinegar or white wine vinegar
Salt and pepper, to taste

Combine honey, orange juice concentrate, and champagne vinegar in a medium saucepan. Simmer for 5 minutes, or until slightly reduced. Add salt and pepper to taste.