I found out a girl I was having sex with was having sex with two other dudes as well about a week ago - juck. She went in crazy mode when I confronted her about it, saying we absolutely "have to remain friends" and calling me unreasonable for telling her that isn't going to happen. I deleted her from FB however not from Snapchat - guess that is the oneitis in me. I also contacted one of the dudes - in a friendly, hey bro just fyi way - asking if he knew about me, since she claimed he did - he deleted her from FB/his life as well.
Fast forward to the weekend, was at a female's friends place and I put a picture of her in her pool on my story "time to relax", I got a random snap from her shortly after - seemed irrelevant, opened it and ignored it and just had (non sexual) fun with friend. I think I then got blocked and unblocked (I saw a notice in the evening that she added me as a friend)? I clicked the [v] thing next to the announcement, which I think removes someone as friend and clicked it again which I think added her again? (yeah, I'm not good with this stuff)
Today I got a snap in the morning of a plush toy I won for her at carnival saying "Mr Paws says hi ..", ignored it, followed by a picture of her laying in bed around 10 hours later saying "Sooo, you're not going to respond?"
I decided to respond - text only obviously. The conversation went something like:
"Hey x, why are you contacting me?"
-"I saw you readded me during the weekend. Thought we were ok

Guess not"
"I never deleted you from snapchat. Thought you'd understand when I said I wasn't going to be just friends with you?"
-"I do, please delete me from snapchat"
"Feel free to do it yourself, you're mature enough to make your own decisions I have learned." (Is this too much "you've been a bitch"?)
-"I just did

" (I assume she actually did it - her story disappeared)
"Oke, well, I have a visitor so bye" (and I did) (she read this snap)
Should I have responded to her snap or was it too early? Looking back at it now, I feel I gave her what she wanted: (too much) attention while lonely/bored
I went no-contact because I feel I was too invested in her and I tried too hard and I want to forget her after the bullshit she pulled.
Should I have just removed her from snapchat as well? I feel like I should have
Did I lose anything by responding the way I did? I don't feel like I really lost power/dominance but not 100% sure
If she actually deleted me, is that bad or good? I feel its good (and fun) that I can make her that emotional with such little text but does it reduce the chance of her contacting me again? (can be good or bad, I don't know yet)
Did I handle it correctly if I do decide that I want to fuck her again in the future?
Obviously resetting my "no-contact timer"