I don't care about missing the opportunity to enjoy a snack, what I do care about is her response to having been caught doing it. That I-don't-really-care attitude is something she shows often and it worries me and will into the future.

An entire day's worth of negativity is what led up to this. It's kinda like having someone aggravating you all day long until finally at the end of the day you cannot take anymore and tell them off. Well, instead of arguing and screaming, I chose to take out my frustrations on inanimate objects and then left to cool off by myself. If hubby hadn't followed me out to the balcony I would have calmed down and that would have been the end of it. The problem was made worse by the conversation that ensued on the balcony.
Not a good idea to marginalize someone else's feelings even if you do think they are off the mark and that is just what he did. Hopefully it's not an issue we will revisit again in the future.