it doesn't have to be nfsw, of course! there are other options. and if it is, she certainly doesn't have to be submissive if she wouldn't be comfortable w that. even something just normal and vanilla works too.

i will say re: her outing, so you can plan accordingly -- lalo does not like the darkwalker, at all, and he'll likely be pretty angry when he finds out he's given information to someone who thinks they can put themselves in league with it since he'll consider it a form of betrayal (since she'll have to actively conceal her intentions in regards to the darkwalker from him for him to want to stay allied with her).

so one other thing i was thinking is... if you want to give him a reason to continue to associate with her once she's outed, another thing that might work would be, instead of something nsfw, maybe he gets randomly attacked by forest talkers or smth and there's too many for one person to fight off so she has to save him? if he feels like he's in her debt that way, that could be a reason for him to continue to associate with her once he discovers he's been (in his mind) had.