There already is a St. Theresa, as in Mother Theresa. And that's a hard act to follow. What miracle did Terri Schiavo perform? Isn't that the standard for sainthood?
Anyway, did she really live a life of exceptional virtue? I don't know, although her bulimia might under normal circumstances count against her. But these aren't normal circumstances.
I'll ask some Catholic friends of mine for their input.
I thought there were a couple of miracles involved, too.