Black... is for the Pureblood heritage that she cherishes.
Enmity... is for her hatred of all things Potter, Mudblood, and Muggle.
Lord Voldemort... is for the man that she would die for.
LeStrange... is for her married name.
Animalistic... is for her living habits.
Toujrous Pur... is for the ideal that she holds above all else.
Rodolphus... is for her husband's first name.
Insane... is for her insanity.
Xenophobic... is for her fear of any culture other than the Pureblood one.