You could be right, but I still think it’s FAR too early to be killing Marian, since she kinda needs to be… ‘in the way’, for lack of a better term.
She’s always been in the way, since she and Robin met. Fate wanted Robin and Regina together, but Regina was chicken, so fate was all, “Fine be that way, your punishment is being the one to kill the one who took your place when no one should be around to take your place.” The only way Marian gets out alive is if she and Robin split up, simply because she’s in the way because pixie dust fate says so, so there’s no getting around it, one way or the other she needs to be removed from the equation.
If they’re gonna use Frozen logic, it’s not even a TLK, it’s just an act of TL. Roland could provide either of those.
I think this whole situation is a setup to prove that Robin doesn’t love Marian the same way any more, (which I don’t really like because it’s kind of a morbid way to prove it which would leave a nasty aftertaste IMO, better to just have him come to the realisation in his own time instead of, “LOLz you don’t have TL no more coz your kiss FAILED”).