I Think ellie is going to be abducted and joel and tess are going to save her, and when they saved ellie,.. tess will die protecting joel and ellie.
and tess her last words will be to joel. take care of ellie, she is our only hope.. or something like that. ^^
Joel doesn't seem to pleased to be escorting Ellie anywhere in the begging of the game, from what we've seen. So I could see something like this happening. Where Tess dies and it givs Joel the needed boost to finish the job for her, thus beginning his relationship with Ellie.
I feel like Tess is definitely going to betray Joel and Ellie. Joel will have to kill her or something.
I like this one cause the darker paths seem more reasonable instead of the cheesy "ERMAGERD protect you!!! run with ellie"
Well, I'd assume she dies. They're with her outside of quarentine zone when Ellie sees the city for the first time, and after that they end up with Bill, but she's not with them. So she probably dies or gets left behind.