Anyone else not like Margo?

I found her so selfish and arrogant.

First of all she all but ignores Quentin for literally years and then she ropes him in to getting revenge on people only to vanish the next day leaving Quentin to possibly face up to police action (for entering a house etc) and angry school mates.

Then she keeps going on about being judged and nobody caring about her yet she exacts revenge upon an innocent Lacey because she judged Lacey and didn't care enough about her friendship to even ASK if she knew.

Finally she clearly had means of contacting people as she mentions she speaks to her little sister daily, it's likely the sister mentioned him coming over twice yet she never made the effort to contact Q and let him know personally she's fine...no she leaves him clues to go to a creepy abandoned old shop because that'll put his mind at ease?

I thought she and the jock were a perfect match, both self obsessed and putting their own needs above other peoples and not caring who gets hurt or caught in the crossfire.