Gosh that sounds really stressful, logistics are a nightmare at the moment aren't they!
I totally get why you'd need DH there for the debrief bit. I think it depends in this circumstance on how you feel about your DPs being in the house. Would you feel you were putting them at risk etc.
As awful as the dilemma is I think I would personally lean towards DH and DD being in the car/having a little walk about and having to do it on my own. You could ask if you could record the debrief ? That's really tough on you and your DH though.
As with so much at the moment, things are a personal decision that only you can make. Big hugs x