The Captain has been drugged, tied up and diddled with magic, has impregnated multiple lizards, the ship's Doctor is a sexual mad scientist who gassed the crew with aphrodisiacs, your teacher is a porn star, and then not to mention the whole domination dynamic with Nyx which has gotten progressively more spicy as the updates have piled on...
I don't think some tentacles from a space witch with Green Lantern Powers seems all that out of left field as some people are making it out to be. It's like the very first thing I thought of when I saw Nyx's magic for the first time. Of course she's going to use them to make tentacles at some junction. I mean, what's the point of a sci-fi setting in a porn game if you don't go a little exotic with it sometimes?
That aside, the Zara complaint is just insane. Zara, hopped up on pregnancy hormones, used a couple of her hand maidens to get a little relief while on a call with the protagonist who is light years (?) away. I think you really need to re-examine what you get out of these type of games if that sort of scenario distresses you. Plus, she's a queen. If anything, the captain is part of her harem.