Could the weight of them have thrown her off axis and contribute to her falling down the stairs?
Very likely.......her C of G.......(that's Centre of Gravity to you non aeronautical types) would have been off kilter with her augmented charms.
Weight and balance issues too, her bloody boyfriend should have known all this!
My first wife had her boobs done despite my protestations and sure enough lost her footing at Bluewater on the down escalator and went into an irrecoverable flat spin and ended up crashed into the front window of Modelzone in a pool of boob gel.
Ended up with a bill for several Airfix Spitfire, Lancaster and Harrier models she destroyed along with an Amy Pond doll ruined.
Divorce papers filed immediately!