I couldn't find any information about Nitza'a recorded stuff (she opened for the Delirium show), so I wrote the e-mail address on her Web site, and she actually wrote back! She said her first album should be out in a couple of weeks.
She also passed along names of performers. The violinist was Catherine Ledoux, who doesn't appear to have anything online. The singer with the pipes was not in fact Jacynthe, but Amanda Stott, who I think frankly was a stronger singer and explains why I didn't think the recorded performance was as good. Still Canadian though, and I'll try not to holder her country singing roots against her. ;)