The low res V4 came about due to the free content that came with DS2, DS1 had V3 RR and a fairy woodland scene, DS2 was a 17k poly V4 with a beach scene rather than the full mesh as an LE, the content we got with DS3 was pretty much the same as DS2.

If you have the free content for either DS2 or 3 then you have a CR2 that uses the 17K poly mesh, it'll take V4's textures, but not any of her morphs.

The LoD system in DS3 and 4 can transfer the active morphs to the LoD version, no idea if you can get them out of DS and into the Quick Start CR2 through.