1. You stayed back and waited for her to initiate anything 2. You let her know you werne't tuning her out and that you were available.
She's under a lot of stress right now (not trying to ask you to sympathize, just realize her head's really messed up) and she likley will have a few meltdowns and tantrums. Just keep playing the mature guy who's caring for her son. She will have no choice but to eat it up.
I think you can see the effect being mature and loving has on a spouse rather than yelling or grovelling...she's breaking down instead of putting up a wall.
She may have had a fight with OM, who knows. Patience is your best weapon right now.