It sounds like the affairs have become blocking points for her journey. My wife was similar...until one relationship just ended with no explanation. That set her off pretty bad.....but I also think that is what really got her moving again on her journey.
So basically she will continue to cycle until one of these relationships rocks her enough to question herself....or she just does it on her own.
The shortness could mean a lot of things.....she is getting sick of dealing with boys or the boys are getting sick of dealing with her....who knows? No real reason to focus on it.