They don't need her in the trailer. The garage is detached from the trailer. Avery's defense notes that no DNA was found of Teresa's in the Avery home, I think that is more compelling evidence that she wasn't there, not that it matters anyway, once again, because the State claimed she was murdered in the garage/jeep. I agree trial notes aren't the equivalent of a trial transcript, but the Avery one's that I have read are far more detailed than the Dassey ones, and I also followed the trial in real time. Granted, I can't remember every little detail, and I'm not saying it wasn't brought up, but it certainly wasn't a make or break it factor for the Avery trial. Once again, the Dassey trial is totally different. Of course they have to bring up circumstantial evidence that she was in the trailer, they have nothing else that could show she went into the trailer, where she needed to be to corroborate Brendan's false confession.