I'm honestly having a hard time describing the emotion this picture makes me feel (or the emotion the character is feeling).

It doesn't seem to be disappointment as her face is almost expressionless.

It seems a bit like shock but but not in terms of surprise as she knows exactly what she is doing.

Depression is too strong of a word though "self hate" might come close.

Embarrassment might be it but it is numbed by the shock.

Idk.