User blog comment:B214/Question and Answers 6/@comment-73.57.25.92-20180326201459/@comment-168.28.156.75-20180327181407

For one thing, Gram chose Kiba as his new master, so I highly doubt Kiba has any relation to Siegfried whatsoever. I could be wrong but we'll cross that bridge when we get there.

As for Freed and Siegfried, Lint never mentioned her relationship with Siegfried, however they might not even be close or know each other that much seeing as he never mentioned her in any way at all. As for Freed, I don't think she was close but was in fact disturbed and possibly scared of him. She wanted to atone for his crimes so probably wouldn't hold a grudge towards Kiba at all believing he deserved it in the end.