If she shows any interest, the next part of the experiment is to check if she minds mono recordings. In my idiosyncratic, but never humble opinion, which ehBeth will strongly disagree with, the greatest recording of almost any classical composition was produced in the sixties or before, so will likely not be stereo. If Sozlet doesn't mind that, here are, via YouTube, the two best recordings ever made of the same Archduke Trio (the first movement anyway):
Cortot, Tibaud, Casals
Rubinstein, Heifez, Feuerman:
Part 1,
Part 2