Yeah, 22 minutes inside the store would be about right, if there were typical long lines at the checkouts. Let's see......5 minutes to get out the door, belt the child in the seat and skedaddle home. PF must have been waiting, blocking her space with the motor running, since the neighbor saw his truck there at 12:30 pm. Let's assume he pulls out, lets her park, pulls back in behind her. Two more minutes gone. They unbuckle the child and go into the condo at about 12:34 pm. The neighbor misses that part, altogether but she notices PF's is truck gone at 1:00 pm. So let's say it only took him a minute to dash out the door with the child, buckle her in, and take off. That's a 24 minute crime commision window. If we were LE investigators, maybe we could tighten that up a little by asking for videos from businesses like Sonic that might have caught KB driving home, and it would be prudent to knock on doors along Highway 24 westward, at least through Divide, looking for that red 2008 Toyota of PF's with the short person riding shotgun. That would be between 1:00 pm and 1:24 pm.
Once it officially elevated from a Missing Persons Investigation to a Murder Investigation, an event which I think I have pinned down to the conclusion of the December 10th news conference at 10:18 am, that's where I would have expected investigators to start looking. IMO