Waking up in a coffin certainly made her connect the dots quickly, but it wasn't logical or possible, just like waking up in someone else's body. Of course, the fact that she woke up in another country and was fluently speaking a language she didn't speak before was also desperate. Should she go to the police? and say what? They kidnapped me and I killed a man by sticking a straw around her neck and drinking from it like it was a milkshake? no thanks.