You might try starting the story by describing everything at the funeral. You can cut out what you don't want or need later, but if you can picture the scene in your head and describe it for readers, then they will likely be able to visualize it too, plus descriptive openings tend to catch a reader's interest too. By the time you get done describing the scene, you can then describe the girl, and you've got them.
Also, since it's a dream, consider which kinds of irregularities might be taking place, things that seem out of place or unreal, then place these clues a little later in your opening to suggest to the reader that something is a little off. Happy writing!