I must have missed it earlier, but I found a thread talking about it http://www.shsforums...lp-with-yvette/
Followed the CLUA commands you suggested. After trying all of them I had to go with CLUAConsole:SetGlobal("YvetteSpellhold","GLOBAL",3) to bring me right to Gabriel's sphere. I get a short conversation between Yvette and Gabriel, he says he is making a doorway back to the normal world for everyone, except Yvette. However no gate appears and there's no follow up conversations between the PC and him, or the PC and Yvette is possible. Even if I attack him I get nothing.
I may just reinstall the mod and see if that helps.