I have no idea. I honestly, cannot see her making this easy for either one of them. I can imagine her being oblivious until one of them makes it so obvious Fem!Hiccup just gets it. But just judging by the picture, I'd personally pick Male!Merida.
I cannot deal with all the feels. You are a master of men, Maby-chan. Hot, McSteamy men. By the gods, I am adoring the ever-living heck out of 'Astrix'. This fixation has got to be unhealthy, lol. THANK YOOOOOU <3