But if she takes that one night in San Diego, would he fly there for one day/night (he's about a 19 hr drive from there, so you'd think he'd need to fly)?
All I can tell you is that when I was in EA the OM, who lived in another state, was willing to drop everything to meet me to make it a PA. I suppose it would depend upon OM's finances, schedule, and physical desire.
As MWD says in her book, hope for the best and plan for the worst. Don't know that that is very encouraging, but it seems to be something out of your control. Some people might think you should lay a boundary about her taking a trip, IDK,.....but to me "that" would certainly be a control issue. Some things, you just have to give her rope....and if she hangs herself...then there's nothing you can do but allow her to make that choice in life.
How are the kids doing?
It is not about what you feel should work in your M. It is about doing the work that gets the right results. Do what works!