RAB / Amelia Bones and her murder

[Tonks]

No: HPFGUIDX 152793

In the process of some detective work regarding RAB, I was 
considering the possibility of it being Amelia Bones. (Yes, I know 
we all think that it is Sirius's brother. But I was just checking 
all leads.) At the Lexicon it says that her middle name was Susan so 
she can't have been using Amelia as a middle name and something with 
a R as a first name.  BUT
I see that she was killed by LV himself. WHY?  Why was she so 
important to be killed by LV himself??  What was he looking for?  
Did he just want to make a statement that not even the head of the 
Dept. of Magical Law Enforcement was safe?  I tend to think that 
there was more to it than that.  But what? 

By the way, RAB backwards is BAR. Perhaps it isn't Regulus at all, 
but someone in the Hogshead or another bar.  Aberforth?  That 
doesn't make sense, or course, because DD would have known about it. 
But it is interesting that is does spell bar. Not that it means 
anything.  One must explore all possibilities and not jump to the 
obvious conclusions. 

Thoughts anyone??

Tonks_op