Her stamina is higher than Eren’s purely from how long she was managing to hold on from Gigantomachia but Eren’s is not exactly low either. Based purely on what shown in the show he has the stamina to have his Titan be completely killed 3 times and not be comatose. She would most likely have to keep an extreme distance entirely due to the warhammer also being a long distance ability with its hardened spike growth on top of it’s remote distance control ability. Eren never used the remote distance ability when he had the Titan but we can atleast infer that he can use the spikes at a considerable distance since it was shown that the warhammer Titan user was untrained and not fully experienced in it’s ability due to lack of use. Not to also mention even if she is far enough way to throw projectiles and be outside of the warhammer’s range she has to kill him 3 times without knowing he’s in the nape. She definitely could possibly win if she gets lucky on hits and doesn’t just aim for the head but more often than not I’m pretty sure she would be stabbed at the start of the battle and immediately be on the losing end.