Bellatrix is Tonk's AUNT sad, ist it!!???
The pure-blood Black family had a lot of sad things about it. The decent members like Sirus and his cousin Andromeda Tonks were disowned. Tonks' Aunt Narcissa married Death Eater Lucius Malfoy, but I think she had her regrets. She was the one who lied to Voldemort about Harry being dead.