I guess it might be something specific to Andras, given his personality and all; he didn't interest me enough to try his path beyond random event here and there.Even then I'd argue it's not much of a slow burn, she gives it up pretty quickly. It doesn't even really feel like dragging it out since once you've done one or two scenes with Andras and get the relationship points with Rowan low enough you get those 4-5 scenes one after the other of Alexia becoming Andras sex slave. The change happens quite fast imo
Going with Jezera path it's pretty easy to trigger what i'd consider a "conscious" decision to have sex with her only after 40+ weeks you've had control, so close to two years since capture, overall.