I think most of her orchestral works - if they still exist - must be in MS somewhere (but I've no idea where), because the only orchestral score I can find of hers, printed during her lifetime - and it's in Fleisher (though no parts), Library of Congress, BL and Bayerische Staatsbibliothek - is a Faust Overture. However, the Bavarian Library has a Full Score of the 5th Symphony in an edition dated 2005, which makes me think it is the one (or a copy of it) prepared for the recording, and presumably prepared from the MS. I wonder where her MSS are.