I have a feeling that if we do in fact get LS, that we won't see Arya/Nymeria pulling her corpse out of the river. There's been zero buildup iirc of any of the other Starks having warg capability in the show, which is disappointing. But perhaps D&D know that nothing ever comes of those subplots (a greater disappointment if true) and subtracts their inclusions. My guess is when she is revealed in the final scene (better be), Thoros will probably rattle off a few lines about them pulling her out and Dondarion giving her the ol' red god CPR session. Hope I'm wrong!