She is just being friendly maybe.
It depends on relationship. It offically means you are so nice to her . In sudden expression it means she is trying to catch your attention for ( it might be love , trying to get your help , or trapping you in )
If she says that to her friends then it means she thinks of you as a friend. If she is normally a tougher girl then she definitely likes you
It's just a warm greeting for a close friend...or she likes Absolutely Fabulous.