I think that your girlfriend and her crew needs to work a little more on synchronization. But, it was not bad. It was pretty good, assuming there beginners.
When there dancing it looks more as if their bodies are just kind of flapping around; whether what they should be doing is they need to have more of a KICK to their dancing, with spirit this time!
you know what I give them props because my ass is inside playing dumb games while there out there doing something productive. Not the best but hell not the worst! Tell them to keep it up!