Mission failed-part 2 (Defeated by her) (Patreon)

After some seconds looking down at Christie, who was helplessly pinned under her boot, Helena removes her foot from her chest and stands over her, with Christie laying on the ground between her feet.  -Christie: T-thank you.. -Helena: Oh dear, I wouldn't thank me if I were you.  After saying that, Helena turns around and slowly crouches and sits on Christie's face, who is still too afraid to do anything to stop Her. But after some seconds with her face under Helena's ass, the lack of oxygen makes Christie start struggling, trying to move her head as she grabs Helena's thighs. Helena then lifts her ass, allowing Chirstie to breathe again.  -Helena: You said you would anything if I had mercy on you. Consider this mercy, and I order you to keep your filthy hands down. -Christie: wait...  Before Christie could say anything else, Helena heavily sits on her face again, only leaving her eyes and forehead free. After some time, Christie starts suffocating for real. She tries to move her head, but the weight on Helena's body stops her from doing so. On a reflex, she almost grabs Helena's thighs again, but she manages to stop herself at the last second and puts her hands down again.  -Helena: Good.  Christie clenches her fist as her body starts to have some muscular spasms and her vision gets dark. Then Helena lifts her ass again, alowing Christie to instantly start breathing desperately, sucking as much oxygen as she can with her mouth wide open.  -Christie: Please...stop...  She says still gasping for air.  -Helena: Stop? I barely started. I told you I would make you regret for interrupting me.  After saying that, helena lifts herself higher and bouncer full weight on Christie's face, buring it under her ass once again.