If there will be no more GSR then it won't be because Sara died. Because she won't die. Because I say so.
But will there be GSR? Not just half (or even more?) of the fans hate it but not even all of the writers like it. So would they end the relationship to keep viewers? Or do they even have to end it because 'OMG, Sara and her boss!'? That would be mean, but still better then killing off Sara. Or making Sara and Gris have a stupid argument and breaking up.
I can't imagine them breaking up (They're just meant to be! They need each other), but I fear it's going to happen. Maybe it's the mood I'm in right now, but I don't have a lot of hope for GSR.