@456musicFAN If you mean making up her own tune, I don't think so. This tune is called "Island of Woods" as the title says. If you mean adding her own embellishments within the tune, yes, I'd think so.
You can certainly play along on fixed pitch instruments based on D (I’m doing it right now with my concert-pitch pipes). But it goes to a low A, and seems to want to go back there. So that might make it A mixolydian (I think, since scale of D is just scale of A with flatted seventh). I’m not so great with modes, someone else might correct me!
Is it really right to play the fiddle with the hand flat against the violin neck? I learn classical violin, I find it kind of disturbing x) Otherwise, very beautiful! =) I love fiddle music =)
The way Liz plays, she can get away with standing on her head! I've seen her play recently, and she seems to be holding her wrist in more of a "classical" straight position these days.nowadays.
I guess as long as she is comfortable and not restricted in what she is doing, it doesn't matter. I learned classical violin as well and I don't do it her way, but she sounds great, isn't it?