She sounds like a spoilt bratI think she acts cocky and confident when she's out with her mates, I've seen her videoing and sniggering at other girls' outfits when her own choices....ermmmm....leave a lot to be desired.
In fact she acts quite sly and the trying to be "Gangsta" act annoys the tit out of me.
Mentally unstable or mentally immature? Is there a fine line between the two or not?