For the sake of clarity in thinking about and discussing images, you should use more appropriate terminology.
Monotonal means having one tonal value. For example, a grey card is monotonal. Other examples would be an evenly-lit, solid-colored backgrounds.
Monochromatic means having only one color. A black & white image is monochromatic.
Low-contrast means there is only a small range between the lowest and highest tonal values.
Saturation refers to the intensity of colors.
Your photo appears to be a low-to-moderate contrast image with low-to-moderate color saturation containing primarily beige and pink tones.
As far as content, "girl biting finger" ranks right up there with "girl leaning on tree" and "girl squeezing breasts together" on the list of glamour cliches.
monochromatic, high-contrast "girl staring at camera" cliche