Anal missbehandling

Sexy CoCo is an anal virgin, she isn't actually sure she is going to like, in fact she is pretty sure that she won't. I tell her that I am only going to play with her asshole, not actually stick my finger in there. I get her extremely hot and bothered first and I won't let her cum, I want her to be willing to accept anything to get an orgasm. I lube up her asshole and stick my finger in. She whimpers but accepts the fact that my finger is going to stay in there if she wants to cum. I get her off several times, she won't admit it but she is cumming harder than she ever has with the anal stimulation. I even finger her asshole without the vibe and get her off. Eventually she cannot take any more stimulation in her ass and on her pussy and she begs for me to stop. She left whimpering, confused, totally unsure of what exactly has happened to her.