To find out, you'd have to knw what her label is, and then learn whether that label has released any of their artists on DVD-A or SACD. If so, you've got a chance...you could even lobby them for Tori, if you want. Maybe try and get a grassroots effort together.
If her label hasn't committed to SACD or DVD-A, your chances are almost nil.
If her label hasn't committed to SACD or DVD-A, your chances are almost nil.