Sorry, I haven't been clear. I'm not questioning her having a PO Box instead of home mail delivery. I'm questioning her having her mail delivered to Florissant rather than Woodland Park. I agree it's not a super long distance, and maybe it's a beautiful and relaxing drive. But it's an entirely different direction than she goes for work. We've talked about her longish commute, busy toddler mom etc. There is just no way IMO she would keep Florissant as her mail location if they had broken up and she no longer had an expectation that she would soon be living in Florissant.
(I don't think she ever expected PF to move in with her at the townhome -- he would always need rural acreage unless he was giving up all horses, cows, and dog training. I think the townhouse was an interim place for her, and also a good investment as mentioned even if she only lived in it a short while.)
But if I had to go 15 miles out of my way to get the mail every day, especially if that meant going to the town where my ex lived, switching my mailing address to my own town (whether PO Box or not) would be one of the first things I would do.
Even if she drove to Florissant nearly every day for child pickup/dropoff anyway, it would still be a hassle to get mail on those days when she DIDN'T otherwise need to make that drive. And yes, she might not need to get her mail every day, I sure don't. This also suggests to me that PF may have been given a copy of her PO Box key, so if he was picking up/dropping off the baby in WP, he could bring her mail too. Seems logistically likely to me and in fact I've had similar arrangements.
I'm just saying that IMO the Florissant mailing address is an indication that KB still thought she might be moving there in the relatively near future. Meaning the claim they broke up months ago is just PF's claim.