Jaime’s conversation with Ser Loras Tyrell draws a noteworthy parallel between Jaime and Brienne. Brienne was part of Renly Baratheon’s version of the Kingsguard, called the Rainbow Guard, and Renly was killed with Brienne standing right next to him. At worst, some people think Brienne was involved in the murder, and at best, they believe she failed in her duty to protect her king. Though not an exact parallel with Jaime’s past with King Aerys, it is close enough that it brings Jaime’s own crime to his mind. When Ser Loras says she either killed Renly or let him die, Jaime says it’s a large difference, but to himself he think it’s the difference between his own crime and that of Ser Boros, who once let Tommen be taken by some of Tyrion’s hired swords. The similarity Jaime notices perhaps also explains why Jaime feels such a kinship with Brienne, despite the two being so different. He sees in her various aspects of himself.
Sansa has escaped one form of captivity only to find herself caught in another in this section. Sansa was a hostage of the Lannisters for quite a long time, and while she was being held she often thought of escaping, even going so far as to entertain the idea seriously when Ser Dontos raised it. With Petyr Baelish’s help she did escape, but now she finds herself imprisoned at the Eyrie in a different way. First, she must pretend to be someone else. Because the Lannisters will be looking for Sansa, not least of all because she’s suspected of Joffrey’s murder, she has to pretend to be Baelish’s bastard daughter, Alayne. As a result, she’s not able to leave the Eyrie, and once Lysa discovers Sansa’s true identity, she essentially forces Sansa to accept Robert as her next husband once Tyrion has been executed for Joffrey’s murder (Lysa seems to have no doubt this will happen). It seems, then, that Sansa will likely have to do things against her will at the Eyrie, too, where she is essentially trapped.