It's quite possible that the material settings used are reliant on the Poser Material Room nodes, which DS will not import. If that is so you are probably not getting the intended results for the skin either, but it is at least semi working.

The Victoria 4 for Genesis 2 Female product gives two things - a new UV mapping which allows textures for Victoria 4 to wrap around the model correctly (without it you'd get very odd results) and a clone shape that allows you to load Victoria 4 clothing onto Genesis 2 Female and convert it. The former would allow you to use the Rose raven textures, but wouldn't solve the issue of getting the settings right which is your main problem.