Yes the R.B one was the one I wanted to use but it's never working like it's supposed to. First I had a problem with the eyes it was the normal map not functioning but when it got fixed then she got bald and I couldn't find why.
I don't wont to waste time learning how to make a npc replacer. So I'm willing to make it worth for someone more qualified to make a Serana Replacer with meshes and preset I'll provide in exchange of remuneration