Depends on how communication is beneficial, how much confrontation they like, how noisy they like it so that loneliness isn't a problem. Ultimately, if a negative coping skill is started or returned as a result then if they are truly managing then that is only thing they have to worry about while healing if that is truly the commitment. A lot of times, you might not even know it is a set up until one or a few alters catch up with it. I think alters find out anyway especially if there is dialogue maybe not right then , but later on. I wouldn't think your friend is in danger just comes with the territory. I've grown to love journaling , but I'm a little further in my healing then some so I/we do it all the time. It takes work because when I first started it was slim to none, but you know I haven't had one therapist put a number on it, like you must journal daily. I thought that has been really great not putting a bunch of demands on us when we're not really ready or have brought into the idea of journaling the only thing we know to say when asked is I forget or I don't want to.