My concern is that they might not make her a companion because I find it easy to just not side with her, games sort of pushes that.
Yes, this is true. As most people tend to play "good", Larian have pushed you away from the evil path ( i.e. embracing the tadpole ) at every opportunity, presumably to avoid upsetting players accidentally. This was a little counter-productive when they were asking EA to take/test the "evil" path; it took me 4 plays to successfully be "evil" in this game!
With how glitchy this route is, I think it's less that they are intentionally thematically disuading players - I honestly think it's just unfinished. It makes a lot of sense to go this route after encountering the siblings, Sazza, and realizing you need to get to Moonrise Towers. So I assume they will flesh the route out more.
That's true, the potential complexity of all possible choices/paths in the game means that it often feels glitchy. The further you go from a linear story, the more dificult it is to build the sort of deterministic state model that sensible conversations/choices rely on.
But ignoring which encounters/paths you actually choose, the game, as it currently plays, actively discourages you from using the tadpole through the camp dreams/cutscenes. That's OK, as most people wil want to play the "good" path; just makes it less obvious how to be "evil" to help the EA process.
