Yes, I do think the conversation was okay. You're in a super-hard position. Left at home by H while he's off 'living the dream' and there are bills to pay, unhappy children with lots of unanswered questions, and you have to take back control of what you can.
Spend some time thinking about the questions posed... H's kayak has flipped over, he's floating downstream and you can't rescue him!!
What can you do now... act as if he's out of the picture, b/c for the timebeing, he is! Take care of yourself, show strength in your sitch, and just maybe you'll show H that you ARE the woman only a fool would leave!