I've compared Susan going to the party like going somewhere after a Navy Seal tells you he isn't willing to go there because it's too dangerous despite not doing it pissing the Navy off at him. How stupid can you be?
Point being, I can definitely see y'all's side of things.
I mean I doubt Harry would see it that way, but it was 100% her fault and honestly Susan got off better then she deserved for that particular act of stupidity. I mean really:
Susan: "Harry, can I go with you to the Vampire Party?"
Harry: "No. Because I'm not going, because I'm a hamburger to those creatures and it's almost definitely a trap specifically set up to kill me by the host, that has a Grudge against me, personally."
Susan:"Imma steal your invite."
How thick can you get???