Well, that all depends on how their relationship between than and now is, innit? Gren isn't so dense that he can't detect the subtle feeling of dread within others (Comes with being a boar faunas) and it won't be hard for him to piece together that Sapphire has daddy issues. Whether or not he acts on that feeling would depend on if Sapphire makes it clear to them if she wants them to help her or not. Communication and all that.