well done (sniff), give your self a pat on the back.

Tess saw the future of what was going to happen to Logan.
Ultimately, when the cops shot Logan it gave Channing a chance to jump int his body, because as stated in the movie, Channing had the power to jump into the bodies of those that were weak and flawed. IE: The alcoholic cop, The Bag Lady, etc..all flawed people.
Logan was flawed because he was a cop for the wrong reasons, to seek revenge for his dead father.
So Logan, in turn, became the final conduit for Channing to jump into at the end, and Tess had foreseen this as Logan lay in critical condition while she sat by his bed.
The bad guy wins.

Tess was 'touched by evil' and was feeling the after-effects of her experience with the evil entity. It's kind of like a junkie having flashbacks. When Logan stabbed the nun in the chest with the cross dagger he drove out the demon. End of story

Your 100% correct!!
Canning has now taken over Logan's body and if Tess is gonna leave that room, then she'd better run like hell!!
Good movie.

Tess could forsee the future right
She gets up and Patriks spirit have now taken over Russels body and will attack Tess when she gets up
They couldnt win over the first power
Thats my two cents of the ending
VICTIMS ARENT WE ALL?

You mean Channing died with the dagger through the heart? Logan the detective was shot twice but in a critical condition obviously.
If impersonating a Police Officer is an offence, shouldn't actors be imprisoned?

To answer your question, she heard his voice due to the trauma. Logan died with cross drived through his heart. The filmakers added the ending to make it suspensful and make it look like it was headed for a sequel. She heard his voice for the very last time before he departed from earth. Hope this helps!
The movie doesn't need a sequel. It's good enough already.
" I want my beep suitcase, beep - Nomi Malone (Elizabeth Berkley) Showgirls 1995.

Probably the latter. But my guess is that Channing's soul still lived on and possessed Logan's body.