My gut instinct is to say Sansa, because she's been through hell and it doesn't look like things will get better for her any time soon, but at the same time, she's actually one I feel kind of bad about taking away from canon, because I want her to keep becoming stronger and take back what's hers and become Queen in the goddamn North. I considered Molly, too, but I don't know that I'd honestly want to, because she has so much agency, and as tragic as her story ends, her choices are all hers. So I actually kind of want to say T.J. Which is weird, because he has a privileged life and a family that does love him, but the thing that kills me about his canon and how abruptly it ends is that we never really find out what happens to him, and I find it hard to imagine him actually ever staying sober in that setting. He'd probably just keep turning to old habits and eventually probably die of an overdose or something. So... he's probably the one I'd most want to rescue.