Best place to give up SMEN?

I decided to have my character, Emma Beryl, start seeking for roleplay reasons; it felt suited to her extreme desire for justice (she's doing Nemesis), her distaste for the masters, and her general tendency towards self-destructive behavior. I always planned to have her turn back at some point, decide some things actually aren't worth carrying through on, realize living a decent life is worth doing, and direct her energy towards more productive ends. (I plan to have her be very revolutionary-inclined in the railway storyline when I get there.) I'm still pretty early in the process, but as someone who likes to plan way in advance, I'm trying to decide where to abandon the search. The Knock is appealing in that it cuts off the path for good, but it'd be a heck of a lot of work to get there. I've also considered giving up at the Carnival; maybe Mrs. Plenty would be able to finally get through Emma Beryl anti-social nature. Are there any other places where one is given the explicit suggestion of turning back? Do any former seekers have thoughts as to what would be most suited to my character?