Interesting use of the word 'mistake' in both the previews above. Lobbing a brick or a rock at the door or window of the shop would surely not merit description as a 'mistake'. Attempting to drive off while drunk and accidentally going into reverse might, but it didn't sound like that.
I'll have to be patient and wait for tonight for all to be made clear. I see the teaser says Alice faces the consequences of her actions. Also looks like Jazzer is going to try to comfort Jim. That makes me think Susan has been injured and Jim is blaming himself.
If Susan is badly hurt, I can't see Chris ever going back to Alice. He could get a divorce pretty quickly on grounds that his wife nearly killed his mother, I expect. 