[quote=@Stitches]
So...why did they kill their best witness? Are they going to bring a beaten and half-dead relative to the Donna and say that they killed another relative of hers, under the premise that she'll take a stranger's promise that it was Mancini's fault all along?

I dunno, seems a bit fishy.
[/quote]

I mean, I feel like the Donna probably trusts her sisters word.