Kathryn Osterman was a legitimate actress who worked occasionally in the movies during the first decade and a half of the 20th century. This looks like a Mutoscope cut-down of an actuality released in 1900, "The Art of "Making Up"". In it, we see her from the rear, sitting in front of a dressing mirror, putting up her hair and powdering her face.
By the time this was released, the peep show was on a down trend. Penny arcade parlors were still popular, but were definitely déclassé. The community experience of the nickelodeon made it popular, the variety of films to be seen in a program made it a better value and the capital costs of a theater were low: all it took was a fair-sized room, and the appurtenances could be rented, from chairs to projector to a piano to be played to cover the racket of the projector. The profits were immense. The Warner Brothers opened their first theater two years later, and people would commission theaters specifically for movie shows.
With the decline in peep shows the impulse was to get the individual to pay for thirty seconds of something he couldn't see in public. Pieces like this were given racy titles and covered mildly titillating subjects.