I will critique neither the photography or posing. I will say that when we are shooting anything we need to maintain control over what is happening, whether it is a choice of background or posing.
I totally understand what you have said, but since you stated you did not know anything about posing for this type of shot, it might have been a good thing to acquaint yourself with posing for this genre before shooting it. Then you could shoot whatever they wanted and add what you think works for your style.
There are times when people, who are not photographers, think they know what will look best, but sometimes they cannot visualize the final results.