Let's talk about triggers and how to deal with your own. It's natural to wonder what's going on in her mind, what she's thinking about, and if it's him. There is a big difference between concern and obsession though. If you start ruminating and getting stuck worrying about the future though, you won't be able to get the recovery and healing you need, or make the important decisions before you.
Also covered:
trigger tracking
mindfulness
intentional focus