Check this out. In 1987, there was a Canadian movie called "Heaven and Earth", directed by Allan Kroeker. I believe the plotline is about the struggles of some English teens and children as they try to adapt to their newly found home in Canada. Apparently Loreena stars in this film, and if I am correct, she also wrote the scores for this film. Interesting tidbit...now I have to find the movie. Has anyone else seen or heard of this movie?

There were a few clips of it on Youtube but they have been since taken down.

For some info on the movie: IMDB

I just found it on youtube but my computer isn't liking me at the moment and refuses to load it.
I now realise what that Heaven On Earth clip is, I honestly thought it was a very odd music video (sans music). Now that I know what it is I would like to go back and re-watch it.

I discovered the existence of that film in the FAQ section of an Italian website dedicated to Loreena.
If you search for "Loreena McKennitt" on Youtube, there are 2 or 3 scenes of "Heaven on Earth" in which you can see her acting.
Her cues are not many, but you can easily recognize her talent, and MOST OF ALL you can see her dressed like a victorian lady .

I don't know if she composed the score for this movie, and I can't find it anywhere online(was it a TV movie?).

I have heard about the movie, and I have also heard about Loreena being in it. Although what I was informed of was that she made a small cameo, and that she wasn't actually the star of the film.

It would be an interesting thing to research, I think. I'm sure she would make a fabulous actress!