What Do You Do when the New OW 'Hoovers' You and tries to Connect?

I have been merrily NC for over 4 months now, and I am beginning to feel sparks of happiness and like my healthy positive self again...then I get this FB 'invite' to be friends on FB...from my EX's new OW that he just met a month ago on PlentyOfFish! I guess already they are an 'item' and 'soulmates' and SOOOOOOOOO 'in-love'...but the weirdest thing of all...bnesides the fact that she already admits to being 'addicted to him' and that he is her 'drug' after only 4 weeks...but she has made herself over to look like ME!!!

OMG! OMG! She actually dyed her hair my exact color and poses and dresses like me...even posted a new pic of herself...looking like a version of ME on her FB.

I want so much to warn her...BC she has children...BUT I know I can't and won't...at this stage she would never believe me...and would also tell him. He is a violent man and I don't want to stir up anything directed towards me by warning her.

Dont' worry...I know to block her FB and not accept her 'invite to be FB friends' (she used a fake profile for this)...possibly so HE would not know...or I wouldn't. But anyway...just wondering...before I block her...can I at least send her a message that might direct her to locate his history of violent behavior and point her in the right direction...

Or NO...just block her and say a prayer for her???