Okay, so the door was unlocked and wide open, but still, it wasn’t her house, so she broke in, okay.
After she broke into the house, she started ransacking the place, eating all the food in sight and busting up the furniture — she even had the audacity to take a nap in one of the beds, right there in the middle of the house.
Soon, the bears returned home and, as any bear would be, they were mad as hell.
So they ate her.
Because they were bears.