I'll go the other way with CN. We know she was involved but just because she was with DM dropping the trailer off in Kleinburg does not mean she knew what was in the trailer. MS was at the hangar with DM, the cell trail has DM and MS traveling with the trailer (allegedly) to their homes. DM switches out MS with CN and they head to Kleinburg. For that matter, at this point CN may have only known about the theft. That is a long shot that she didn't know about Tim etc. at this point but..."Hey wanna come for a drive up to my mom's house? Gotta drop off a trailer" does become possible. She may have just been running errands with her boyfriend.
MOO (and not a strong opinion...just playing devil's advocate for a change of pace.)