To those arguing "lies": Yeah, no, Jim wasn't lying, he was trying to find a friendly and reasonable place to leave a hazard of a child before he had to be somewhere. You tend to drop the neceties of details when you're panicked and/or rushed.
I have to say that Dora's eyes are getting to me in this one - the expression isn't changing. She's obviously fretting about Sam in the first few panels (first about the knife, then about her feelings), but in the last panel, the eyebrows have dropped, but the eyes... are still the same, and it's really hard to read what Jeph normally makes easy - her facial expression seems to involve a pretty heavy internal struggle.
So to those predicting a Doapocalypse, I say, nay! I think she's realizing that the welling feelings of mistrust and anger (or whatever she's feeling) are misplaced, inappropriate, and control-related.
I think she's actually going to have something to talk about with her therapist next time!
I know, I know, it doesn't make for a very exciting comic...