After watching anime and read until this point, I guess it's likely there is a time gap. The anime is just messing with us. Her classmates were reincarnated after her.
A mental breakdown in manga, who could have guessed. Mc leaving home and traveling is the best way with this setup but pretty done nicely from the author
Saw many people say Grisha and Owl are out of their characters. But I'm sure they are still themself. Eren just showed them enough to manipulate them, he should have known they gonna help others against himself in the end.
These couple of chapters in months were so hyped which makes us forget...
This is not really a good ending, but I don't blame the author. The manga shows us the problem that we don't even have the answer irl and so does the author.