Pulling up her skirt and rubbing her panties

I have a co-worker, who is sexy as hell and has a habit of pulling up her skirt and rubbing her panties while outside supposedly hidden on the side of the building, smoking cigarettes and talking on the phone.

I have her timed to a letter when she takes smoke breaks and I go out to a first floor bathroom where I can film her without her knowledge. I have recorded 15 hours of the hottest panty/upskirt stuff I have ever seen. She does her thing thinking no one is looking. At least two to three time per cigarette smoked, she pulls up her skirt, runs her hand across her panties and then sniffs. Sometimes she has pulled her panties to the side, put her finger in her pussy or run it across that hairy thing, then sniff. Sometimes she will have the skirt up for more than a minute, talking on the phone, smoking cigarettes and then run her finger across the crease of her pussy and sniff. 

I have cum countless times to the videos of her. I might let her know that I have them.