I am going to suggest another path.
Stop caring about what medium she is using and just plain encourage her to keep shooting.
....and I agree with Andrew (Mr Greenstreet). Photography itself is the overarching thing, surely? I spent about 5 years in the mid 90's being a digital photography evangelist (early adopter at the low end of the market) and shooting all those rubbish (but getting better) images really helped me get my eye in and led me...at the end of that journey....to the realization that I couldn't really take the kind of photos I wanted to with the digi cams in my price range. Something was always missing.
One LC-A later (present from my wife) and a chance meeting with Damion who told me all about this thing called a Holga and I was hooked....I could suddenly produce images that were a lot closer to the ones that I'd had in my head when I pressed the shutter. The connection was made and I've been a film fan boy ever since.
The instant-feedback nature of digital is what turned me into "a photographer" though and if your daughter is to get that far at least then she probably needs to do what comes naturally to her.
Let's face it; she already has a huge advantage over most of her generation....she knows that film exists and she has a Dad who takes awesome photos and shows a love and enthusiasm for film photography. That's probably enough for now.
For the rest, only time will tell.
