Why could she do that?

[WindAtMyBack]

She was probably sick and couldn't hold it in. Sometimes the body does things that you can't stop no matter how hard you try.

No, I've never had that experience, but there have been a few times it came close to it.

[NoblesseObligeKK]

Judging from her lack of panties and umbrella hiding her face; I'd say this was deliberate. Pretty freaking gross, but everyone gets off on something I suppose.