I've got a bit of a mod conflict or some issue where I can't give Lydia certain things, and can only drop them on the ground and order her to pick them up...which I did.
I then turned to Gerthude and clicked on her, to order her to join me so I could give her the sword I made for her....ummmmm....D'OH!!!
Lydia leaps past me in a blur of flying pot plants (mod), table decorations and plates etc, and snots Gerthude...someone hit the fox, the bard was screaming like a little girl, the girls were screaming like crones, the dog and fox attacked Lydia and Gerthude and my dining room was an absolute bl**dy mess with junk everywhere......auggh... Reload....
About the only thing that surprised me was that Serana didn't start zapping or freezing everyone in sight...I'm thinking that perhaps she was letting the competition sort it out amongst themselves before wading in...