Nymphadora.
The treatment of your parents will need to be taken up with your aunts and that side of the family. I never had much interaction with your mother while she was growing up as Cygnus and I were never very close and as such I never really cared much one way or the other what she did. Her disownment was handled completely by her parents and Orion.
That being said, just because there is an issue with your parents or an issue with Callum's parent, does not mean that I take issue with you. You and I have never really had much reason or cause to interact before now and as I told Callum, you are not your parents and I am doing my best not to hold the sins of the parent against the child.