Chastity and orgasm denial discussion

My wife and I have been off chastity for about 5 - 6 months but lately I have been revisiting it with her as I “miss” being locked up for her. She has told me that if we continue that she doesn’t want me to treat it like a game and for me to think that I can back out. I understand her reasoning as every time that we have done it in the past, I get cold feet just as she is enjoying herself. She told me that either we do it or not but she is not going to be jerked around again and toyed with. So, after agreeing with her terms, she put the device on me last Friday. She told me that my decision made her very happy and that she would make sure we both had fun. Since then, she’s been dressing sexier and has had me please her on an almost daily basis which is very nice! I am extremely horny and last night I told her that I was sorry but I really needed to get out. She told me that there was no reason to be sorry about it because that was the whole point of being in the device so my feelings were natural. So I asked her if she could get the key and she said no and that she would release me when she thought I had earned it. She said it’s ok for me to want to be out but the only way to get out is by pleasing her. I whined about it a bit and she said that this is what I’ve been begging her to do for years and she was trying to make me happy by being strong and firm. She said that she would let this incident go but further whining was going to be punished. I asked her what she meant by that and she said that I shouldn’t test her resolve on this matter. She said that if I absolutely really wanted out, she would let me out but she said that it was pointless because in 3 weeks or 3 months that I would be back begging for her to lock me up. I had to agree with her on that because that is what happens. She said that what I really need is for her to be strong and to punish me for disobedience. She told me that I should think about it today and let her know tonight what I want to do. She said that this was the last time we are doing this so I need to decide what I want. This kind of sucks. She’s right in her thinking but now that I’m in and horny, I want out. It’s hard to surrender completely.