I wonder about the tea and granola bar. She may have gone in to make it and perhaps take it with her into NYC. If she left the Suburban outside and opened the garage door, he could have then come in behind her and attacked her in the house perhaps knocking her out then and dragging her out into the garage. Even if she made the tea and left it to steep while dropping off the kids at school, she might have left the Suburban outside to run in and get it. If she was in a rush she might have left the garage door open also.