Right. For what they have arrested and charged him for, they have to prove the mindset first, then prove said mindset transferred from SB to CM. This would be a case of he said/she said in order to prove mindset even just against SB. Then, to somehow move it to a mindset against CM.
And, SB said 10 minutes passed between EA not moving over on the couch and him seeing her in the bedroom. If he was so worked up, why the 10 minute wait? And, did he get up just to see where she was, or to do something like go to the bathroom, which might be in a hallway between the couch and bedroom? These are things the defense will likely aggressively question.
That part is not as solid as I thought it would be. Everything else is pretty heavily leaning against him. But, that part will be picked on by a defense attorney, IMO Again, aggravated is a higher bar than just kidnapping.