Rabastan, no doubt, would be the sort to scour the records every single day to make certain his colleague wasn't going down there on her own without reason. It was imperative that Hermione not throw up any red flags or she would be in just as much danger as Aberforth. More potentially. He was just looking to lose his own life. She had a son to consider. Even a husband. Antonin wouldn't be the first high-level Death Eater to be taken down by his spouse's actions. Few in their set ever discussed the ill-fated Averys for a very valid reason. Because she didn't want to end up in her own cell down in the bowels of Ministry, Hermione knew she had to be extremely careful.