When matt and pidge reunite, pidge runs to her brother with open arms expecting the tearful hug she’d been imagining. But instead matt flinches away and takes a few steps back with fear in his eyes. Pidge’s eyes fill with tears as she freezes, staring at him with mixed shock and devastation.
While in the galra prison matt was subjected to mental torture to keep him from fighting back. What he was shown was his little sister being hurt and killed by his hands over, and over, and over. So he can’t think of coming near her, if this is really her.
It takes time, matt sitting on one side of the room and pidge on the other just having little talks, trying to get matt comfortable. Weeks pass and eventually matt looks up when she walks in and opens his arms, pidge hesitantly walks over to him and they collapse into each others arms, falling to the floor. Pidge is sobbing and matt is shaking, gently running his hand over her hair, finally realizing he has his sister back and he will never going to let her go again.