Chastity and orgasm denial discussion

Late last night I was staying up to watch the hockey match, and my wife had set her key for my cage down by the couch. Since I’d been having a few drinks, perhaps my judgment wasn’t quite right. I went ahead and unlocked myself and got started with some unapproved self-pleasure. It only lasted a short while and I didn’t reach an orgasm. Feeling guilty, I relocked myself and headed to bed. When we spoke today about it, she wasn’t sure what sort of punishment fits best; just that I should be considering my options. I feel awful because she is so kind to keep the key for me, yet here I am having betrayed her trust. What do you all reckon? P.S. It’s been a week in lockup now. She planned on letting me out today but clearly not anymore since she’s off to see her parents starting Friday.