Should I Continue?

I’m just looking for some different perspectives on my situation. You can read about my journey in my entry entitled “Starting Again” in the Journey section, but here’s my situation in a nutshell: My wife and I are 50yo and our sex life has always been pretty boring and vanilla. I of course have a higher sex drive than my wife, who would be perfectly happy to have sex once a month if not less. Anyway, I discovered male chastity and it really clicked with me. At first I did everything in private but then made an unsuccessful pitch to my wife which was immediately rejected. Months later, when I realized I didn’t want to give this up, I explained it to her again. She told me she was totally turned off by the whole thing, but if I wanted to wear it then that was my business. This was encouraging, and I began to wear the device more and more, not being concerned about her seeing it or whatever. I also began really showing her how we can still have fun in the bedroom, and how oral on her can give her awesome orgasms. I also began doing more around the house and being more caring in general. It was unusual in that I was still holding my own key and she didn’t want to be involved in holding it. She eventually went on a couple of business trips, so I decided to give her the key each time. After the second trip I decided not to ask her for the key back and instead would remain locked until she decided to give me the key back. Well, apparently she forgot she had the key so days went by after she arrived home with no exchange of a key. Last night we had a great time in bed and I brought her to some pretty intense orgasms orally which she really seemed to love. We held each other and told each other how much we love each other. She seemed very happy and satisfied. This morning I felt I should bring up the fact that she still has the key, and when I did she gave me a somewhat blank stare and said something like “oh yeah, that, I guess I still have it”, after some discussion she assured me that she could “probably” find it and that that’s why I have a spare. It became obvious that she is still not into this whole thing, even though I have been trying to show her the benefits in and out of the bedroom, but it’s difficult when she has no desire to be a keyholder and I’m voluntarily locked. I guess my question is should I keep going, or maybe lay off for a while? She doesn’t seem to have an issue with me wearing it, but then what’s the point if she doesn’t want to be involved at all.