That bag looks similar to the mini monogram Marie (which in turn is similar to the style of the vernis Tompkins Square). However, I don't know if the one that she's carrying in this photograph is real - because it looks a bit too "squat".
It looks like the monogram is not authentic. it looks like a fake and a bad fake at that. I swear everything she has is fake. multicolour papillon anyone????? Plus her sunnies are always filthy. Just like her.