After learning the truth of what actually happened the day she tumbled down the stairs, Hermione was emotionally exhausted. Distraught by the clear evidence that she couldn't trust what she saw within her own mind, she's begged her husband more than once to tell her what was wrong. Antonin held her in his arms, whispering promises that they would do whatever was necessary to get the answers they needed. She wanted to believe that he was right, wanted to believe that it was possible.