I am now officially a Jenny Han fan! (and you too, Miss Vivian) 
 Even though I haven't read her Summer books which is her debut series, I fell in love with her in To All the Boys I've Loved Before. 
 Gosh! I'm totally digging this revenge stuff. *insert evil laugh here :) 
 Kat is hardcore. Lilian a princess (as what Kat always describe her). And my namesake, Mary, is pretty weird. But I love the girls anyhow, especially when they are together to do the "deed" ^__^v 
 Now, I'm off to Fire With Fire y'all:)