Yeah, so presumably if anything between Lena and Cindy were to occur it stands to reason that either something positive needs to be built first, or Eva could structure an intense rivalry between them, which could potentially turn sexual as well.
Like I said, the lack of this content being present isn't the same as it never coming about. I think it's perfectly reasonable to doubt that it ever will come about too, I just personally think the chance of this is at least better than 0...

And I think it's more fun to hope that it does come about, but that's just because it's a pairing I'm into.