Ok, here's the long of it:
I wanted to create a mod so that my spouse can leave the house, mingle around Whiterun (or any town we are living in), then go home, sandbox, and sleep.
I know that the RelationshipMarriageFin quest handles the Spouse Packages in all the holds. I started with just Whiterun. Now, I am aware that there's a mod similar to this but it also makes changes to Carlotta's market stand and does some other stuff that I'm not interested in. All I want is what I described above and after getting that correct in Whiterun, I want to extend that to the other major holds.
The issue is, once she does all her sandboxing and mingling, she won't go back to the Breezehome location. I pinpointed Breezehome as the culprit, because when I set the Sleep Location to "Editor Location", she stopped sandboxing and headed out the front gate of Whiterun and proceeded to walk to Riften (I'm married to Sylgja).
Right now, I'm using a custom version of Breezehome, but it's still technically "Breezehome Cell". It shouldn't matter that the house is customized. The children we adopted know to come back to Breezehome when playtime is over, so what is the issue with the spouse?
TL;DR - How do I direct an NPC/Spouse sleep package to a bed in a custom house?