Hold a memorial service and comfort her with Crystal and help her through this difficult time of hers. Would be British about it....., tell her to keep a stiff upper lip and Crystal can make he chai and scones.....mmmmmmm! Scones! Now I am hungry!
I would be kind and supportive I would first take her in let her stay for a while and try to make her happy. While she is getting over the loss I would then make plans to make payback to the little $&@""@& that killed wewe and the last revenge will be hers