...and before she married him, they were dating a long time, as /highschool sweethearts/, people who were probably inseparable every single school day during lunch.

It wasn't just that Hotch wasn't there for him because of the BAU, it was also that he didn't let her be there for him! Remember when she cooked for him in The Fisher King? She wants to take care of him too.

She didn't like what he was doing to himself, because of the job.