This picture shows u an example of RGS (Restless Ghost Syndrome) In SL it can be defined as the disempixeled spirit of an avatar that has left SL. It can be seen as insubstantial and partly transparent. Most of the times ghosts r reported 2 haunt particular locations or people that they were associated with in SL at time of their departure. This picture shows u an example of a "White Lady". They appear most in the crowded Jazzy places of SL and supposed 2 have departed tragically or suffered trauma in their SL. Common 2 many of them is the theme of losing or being betrayed by a husband or fiancé. When one of these ghosts is seen it suggests a coming drama. Best advice: Stay calm, step away at least 5 meters and DON'T look her in the eyes. U can make her leave quietly by playing the "Ghost Of Love" song (The Rasmus) U can find it here:
http://www.youtube.com/watch?v=OaeE2Xljak8
U can also sing it. The songtext can be found here:
http://www.mp3lyrics.org/t/the-rasmus/ghost-of-love/