This is why I think they did not see hers. Seriously if they have footage of her vehicle parked in the parking spot and her car was so close to his, then LE would see what transpired in the garage. The warrant talks about her car not leaving the garage, and uses video of the cars exiting as evidence to support reasonable cause for searching his car for dna proof of her being in his car. If there was footage of her getting in the car, the warrant would be used to search for evidence of her demise while in his car or something like that. That's MOO.
**sorry in advance if the quote is all jacked up.