Just some thoughts, based on the last few pages of threads I've managed to get through:
1) Nancy Grace calling him a "dream guy" is her being her overly dramatic self. I don't think we should read too much into that.
2) Everyone wants to know where the rest of Ingrid's remains are. LE has stated that there was an almost empty box of kitchen trash bags in her house that matched the ones dumped into the recycle bin. Maybe he placed her other body parts in additional bags and dumped them in various places along the way to where her car was found.
3) Someone had pondered which of them had the Mariners tickets for that game. If he purchased them, there would be a paper trail leading to him. However (and I'm sorry I don't have the link for this), I thought I'd read that she had season tickets. Regardless, if the tickets were pulled up on her computer, it makes sense she would have purchased them. Again, there will be a paper trail there.
4) Tickets have a bar code that is scanned when you enter the ball park. This is partly to ensure that the tickets are not fake, but they should be able to know if the tickets that were purchased were scanned at the gate.
5) There are cameras
everywhere in MLB ball parks these days. Almost literally everywhere. At the gates, on the concourses, at the concession stands, even at the entrances/exits of the parking garages. However, that's a lot of footage to go through to see if Ingrid is on there.
6) Her car was found in the Belltown area, I believe. I would not be surprised if there were cameras monitoring the streets/intersections around there. However, again, it would take quite a bit of time to go through the footage, and that's if it wasn't automatically recorded over.
7) I think it's
entirely possible that Ingrid did not know him as well as she thought she did. I highly doubt that she would have bothered with him if she'd known about any sort of shady past, drug use, violent tendencies, mental illness, etc. She was a mother to three daughters, holding down a responsible job. I really can't see her saying, "oh, well!" to his history, even if she was only looking for a good time after her divorce. I suppose it's possible, but I will bet that he lied to her and she saw no indication to believe otherwise a month or so into their relationship.
It's my belief that he knew what he was doing, as placing her in a bathtub to dismember her requires at least some awareness, and he most likely had to go find the pruning saw that was later located in the bathroom (sorry for the mental picture). He may have killed her in a fit of rage for whatever unknown reason, but it seems to me that he pretty clearly thought through how to get rid of her.