Arya with her frey list and extra kills for extra vengeance points

We all know what she did in the S6 finale.

some spoilers here from leaked script of season 7 dont read if you don't want to

According to the leaks of S7, she will take the of walder frey. She will make a feast for the frey family to poison them all(the male freys actually).

But before doing that, she will start to gather info on who participated in the red wedding, who did not, who were the victims, what's the situation on the realm and more IMPORTANT where are the soldiers who put grey winds head on robbs body. She knows their names, remember back in S3 EP10, after the RW she and the hound see some frey soldiers and one of them says him and other 3(mention by name) did it.

The question is: how she will kill them? would be during their sleep? poison?many stabs during their lunch? would she make sure everyone who see their bodies they had slow and painful deaths? whatever the methods, THEY ARE DEAD because she knows their names.

Now olyvar frey, I hope he makes an appearance since he was only mentioned in the series when catelyn mention walder's terms to robb to be his squire. With the S7 leak they were looking for frey cast, there is a small chance.

He was a stark loyalist so his family sent him away in ''duty'' before the RW. Since Arya has strong sense of vengeance to kill the direct traitors of her family and no one else, there is a small chance she will let him live despite his name.