Other mistake: When Al Pacino is supposedly dead, on the left side of his neck ( to our right ) his pulse can still be seen slightly.
Other mistake: When Al Pacino falls into the water off the floating logs, the platform on which he climbs out of the water onto is already wet and even has footprints leading to the metal walkway behind him (which at the end of the scene he leaves on).
Answer: OMG, even my 7-year old daughter realised that the scene was made for the exact opposite reason. Dormer and Tierney talked "all night" and Tierney was sleepy. Dormer and Tierney had a genuine (if short-lived) friendship. Her sleeping on his bed only referred to their trust in one another. His bed had no metaphorical meaning. In fact, it was Ellie who developed a strong crush on Dormer. A crush that interfered with her objectivity as a policewoman.