Helayna has more than enough variety for how minor of a character she is. She's not a protagonist, deuteragonist, tritagonist, antagonist, or any kind of agonist... she's a character who can either have a low level of relevancy or no level of relevancy. Aside from giving her more scenes to fill in her current state of affairs if you keep her, she has had enough focus.
One thing people need to remember is that this is a game that has a lot of variables and the more variables you put in the more of a cluster fuck things become further down the road.