I love the name [name_f]Bella[/name_f], and I love the name [name_f]Beatrix[/name_f], but I would not personally use [name_f]Bellatrix[/name_f] because I do get a strong Ms. Lestrange reference from it. However, I do often consider [name_f]Hermione[/name_f]; the difference being, as you said, the fact that Ms. Lestrange was indeed a sociopath. Like you said though, Ms. Lestrange does not ‘own’ the name by any means. While I would not feel comfortable using it, I still think that it’s not too unusable. Best ofluck!