why Jenny deserved to die

She's introducing Marnie to Stab, apparently, since Marnie seems clueless. And she starts with #7? Always go chronologically, doesn't seem like 7 was the best. Though I do like the line "Because you talk too much." My then-boyfriend laughed and said that could be me. Also that opening makes me wonder if Stab 7 had a similar opening to 6, as in (spoilers) reveal a Ghostface who is killed shortly thereafter themselves