Actually I think it is possible to sense utter boredom coming across in waves transmitted through the water at depth from a dive buddy.... as you say, a bit like narked.... I bought mine a GoPro for Xmas to try and divert attention but, hopefully, not too much away from her modelling.
Next thing: you can see the beginnings of some backscatter above the beam of the torch and the left side of the rock. This may show up better (unhelpfully!) in a larger scale image. You might like to see if you can spot these out with LR or PS.
When you are out in the water again, you might like to try targeting the strobes away from "open" water and directly onto something you want to light - in this case, I'd suggest the deadmens-fingers and not the diver. Another tough bit of WA photography with models: getting some light on the model without introducing backscatter and while lightning the interesting underwater bits. It's all a bit trial and error I find - just getting the balance between strobes, ambient lights, interesting bits of reef etc. And getting the darned model to keep their eyes open and exhale JUST at the right moment.