I don't believe we have enough information - cleared/confirmed - yet. All I have
- What happened between 2 pm and calling Dad (around 6)? That's a long time to sit there puzzling about your missing girl and baby.
- Did he call her friends or visit acquaintances in the complex?
- Why were her items in the car not at home? The car only makes sense if she disappeared from the parking lot. That's lots of witnesses.
- Shane seems way over his head. I understand the need for him to call Dad.
- He forgot about the other child, when a reasonable person would immediately wonder if the other child was missing, too.
FWIW: I remember the dog and open door, too.
Will try to answer some of your questions; there's quite a bit in this thread and the previous one with helpful links as well.
1st bullet point : We don't know, and SC has never divulged this.
I theorized he may have taken a nap or had a beer or whatever.
Not unusual if Heidi was the sole caretaker for the baby and he was just off his work shift and wanted to 'crash' w/some 'me' time.
2nd b.p. : He said he assumed she'd gone over to visit a neighbor in the same apartment bldg. We don't know who that was ; nor if he walked over there to check on Heidi & baby.
3rd b.p. : Some of her items were in the apt. --which makes it look like she was inside at some time after arriving back home from the school drop off.
We don't know if there were witnesses around. SC says he spoke for hours the next day-- trying to see if someone heard anything.
4th b.p. : Agreed. Good to have a helpful parent.
5th b.p. : The older son of theirs was in school and SC didn't think otherwise.
The school called him at 6pm as the son was supposed to have been picked up by Heidi before then.
After SC arrived home from the school pickup he waited for an hour , spoke to his dad and maybe friends -- and then called to report her missing.
So that's the timeline as far as we know !
Hope that helped.