While I get why the Rhaegar-marrying-Lyanna-polygamously argument makes sense plotwise, I’m still kind of baffled about how/why Lyanna went along with all of this. Starks kept with the Old Gods who forbade incest, so they kind of had this private internal horror with how the Targaryens conducted themselves from the get-go. And Lyanna is shown by Ned vis-a-vis to have a solid head on her shoulders when it comes to judging peoples’ character. I have a hard time seeing her just mutely obeying.